Bumps [actions/checkout](https://github.com/actions/checkout) from 2.3.4 to 2.3.5.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/actions/checkout/releases">actions/checkout's releases</a>.</em></p>
<blockquote>
<h2>v2.3.5</h2>
<p>Update dependencies</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="1e204e9a92"><code>1e204e9</code></a> update licensed check (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/606">#606</a>)</li>
<li><a href="0299a0d2b6"><code>0299a0d</code></a> update dist (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/605">#605</a>)</li>
<li><a href="be0f448456"><code>be0f448</code></a> Bump ws from 5.2.2 to 5.2.3 (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/604">#604</a>)</li>
<li><a href="56c00a7b1f"><code>56c00a7</code></a> Bump tmpl from 1.0.4 to 1.0.5 (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/588">#588</a>)</li>
<li><a href="85e47d1a2b"><code>85e47d1</code></a> Bump path-parse from 1.0.6 to 1.0.7 (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/568">#568</a>)</li>
<li><a href="3fc17f8645"><code>3fc17f8</code></a> Bump hosted-git-info from 2.8.5 to 2.8.9 (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/500">#500</a>)</li>
<li><a href="e3bc06d986"><code>e3bc06d</code></a> Bump lodash from 4.17.15 to 4.17.21 (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/499">#499</a>)</li>
<li><a href="442567ba57"><code>442567b</code></a> Bump handlebars from 4.5.3 to 4.7.7 (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/497">#497</a>)</li>
<li><a href="7f00b66d06"><code>7f00b66</code></a> Bump y18n from 4.0.0 to 4.0.1 (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/469">#469</a>)</li>
<li><a href="eccf386318"><code>eccf386</code></a> Bump <code>@​actions/core</code> from 1.1.3 to 1.2.6 (<a href="https://github-redirect.dependabot.com/actions/checkout/issues/361">#361</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/actions/checkout/compare/v2.3.4...v2.3.5">compare view</a></li>
</ul>
</details>
<br />


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</details>

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2.6.1 to 2.7.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v2.6.1...v2.7.0)

---
updated-dependencies:
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Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1.4.1 to 1.5.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v1.4.1...v1.5.0)

---
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  dependency-type: direct:production
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Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2.5.0 to 2.6.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v2.5.0...v2.6.1)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
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Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1.4.0 to 1.4.1.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v1.4.0...v1.4.1)

---
updated-dependencies:
- dependency-name: docker/setup-buildx-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
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Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v1.3.0...v1.4.0)

---
updated-dependencies:
- dependency-name: docker/setup-buildx-action
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Bumps [docker/login-action](https://github.com/docker/login-action) from 1.9.0 to 1.10.0.
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](https://github.com/docker/login-action/compare/v1.9.0...v1.10.0)

---
updated-dependencies:
- dependency-name: docker/login-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
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Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2.4.0 to 2.5.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v2.4.0...v2.5.0)

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Bumps [docker/login-action](https://github.com/docker/login-action) from 1 to 1.9.0.
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](https://github.com/docker/login-action/compare/v1...v1.9.0)

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Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 2.3.4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...v2.3.4)

Signed-off-by: dependabot[bot] <support@github.com>

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Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2 to 2.4.0.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](https://github.com/docker/build-push-action/compare/v2...v2.4.0)

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Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from v1.2.0 to v1.3.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v1.2.0...0d135e0c2fc0dba0729c1a47ecfcf5a3c7f8579e)

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Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from v1.1.2 to v1.2.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v1.1.2...012185ccbeb554a7f5f987bea0f1a73519b3cdf5)

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Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from v1 to v1.1.2.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](https://github.com/docker/setup-buildx-action/compare/v1...2a4b53665e15ce7d7049afb11ff1f70ff1610609)

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Replace defer with t.Cleanup().

Replace the combination of ioutil.TempDir, error checking
and defer os.RemoveAll() with Go testing.T's new TempDir()
helper.

Mark auxiliary functions as test helpers.