Bumps [rtCamp/action-slack-notify](https://github.com/rtCamp/action-slack-notify) from ecc1353ce3 to 2.1.2. This release includes the previously tagged commit.
- [Release notes](https://github.com/rtCamp/action-slack-notify/releases)
- [Commits](ecc1353ce3...ae4223259071871559b6e9d08b24a63d71b3f0c0)

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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.

* remove circle

* remove prefix

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.0.14 to v1.0.15.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Commits](https://github.com/codecov/codecov-action/compare/v1.0.14...239febf655bba88b16ff5dea1d3135ea8663a1f9)

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Bumps [rtCamp/action-slack-notify](https://github.com/rtCamp/action-slack-notify) from e9db0ef to 2.1.1. This release includes the previously tagged commit.
- [Release notes](https://github.com/rtCamp/action-slack-notify/releases)
- [Commits](https://github.com/rtCamp/action-slack-notify/compare/e9db0ef...ecc1353ce30ef086ce3fc3d1ea9ac2e32e150402)

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Bumps [actions/cache](https://github.com/actions/cache) from v2.1.2 to v2.1.3.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v2.1.2...0781355a23dac32fd3bac414512f4b903437991a)

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Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.0.13 to v1.0.14.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Commits](https://github.com/codecov/codecov-action/compare/v1.0.13...7d5dfa54903bd909319c580a00535b483d1efcf3)

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- use matrix builds to run multiple test jobs
- upload code coverage once not 4 times (produce more accurate codecov reports)

Co-authored-by: Erik Grinaker <erik@interchain.berlin>
Co-authored-by: Alessio Treglia <alessio@tendermint.com>

Bumps [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action) from v2.2.1 to v2.3.0.
- [Release notes](https://github.com/golangci/golangci-lint-action/releases)
- [Commits](https://github.com/golangci/golangci-lint-action/compare/v2.2.1...e868220d9fd3b523f1a8fcfb69749e8c7521ba14)

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Bumps [gaurav-nelson/github-action-markdown-link-check](https://github.com/gaurav-nelson/github-action-markdown-link-check) from 1.0.7 to 1.0.8.
- [Release notes](https://github.com/gaurav-nelson/github-action-markdown-link-check/releases)
- [Commits](https://github.com/gaurav-nelson/github-action-markdown-link-check/compare/1.0.7...e3c371c731b2f494f856dc5de7f61cea4d519907)

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Bumps [gaurav-nelson/github-action-markdown-link-check](https://github.com/gaurav-nelson/github-action-markdown-link-check) from 1.0.7 to 1.0.8.
- [Release notes](https://github.com/gaurav-nelson/github-action-markdown-link-check/releases)
- [Commits](https://github.com/gaurav-nelson/github-action-markdown-link-check/compare/1.0.7...e3c371c731b2f494f856dc5de7f61cea4d519907)

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Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from v1.0.13 to v1.0.14.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Commits](https://github.com/codecov/codecov-action/compare/v1.0.13...7d5dfa54903bd909319c580a00535b483d1efcf3)

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Co-authored-by: Marko <marbar3778@yahoo.com>

Bumps [actions/cache](https://github.com/actions/cache) from v2.1.1 to v2.1.2.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v2.1.1...d1255ad9362389eac595a9ae406b8e8cb3331f16)

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Partial fix for #5291.

Implementation spec of Double Signing Risk Reduction [ADR-51](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-051-double-signing-risk-reduction.md) by B-Harvest
- Add `DoubleSignCheckHeight` config variable to ConsensusConfig for "How many blocks looks back to check existence of the node's consensus votes when before joining consensus"
- Add `consensus.double_sign_check_height` to `config.toml` and `tendermint node` as flag for set `DoubleSignCheckHeight`
- Set default `consensus.double_sign_check_height` to `0`  ( it could be adjustable in this PR, disable when 0  )

Refs

- [ADR-51](https://github.com/tendermint/tendermint/blob/master/docs/architecture/adr-051-double-signing-risk-reduction.md)
- [https://github.com/tendermint/tendermint/issues/4059](https://github.com/tendermint/tendermint/issues/4059)
- [https://github.com/tendermint/tendermint/pull/4262](https://github.com/tendermint/tendermint/pull/4262)

Bumps [gaurav-nelson/github-action-markdown-link-check](https://github.com/gaurav-nelson/github-action-markdown-link-check) from 0.6.0 to 1.0.7.

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## Description

This PR updates golang-ci to latest and stops looking at master for the action. 

Closes: #XXX