build(deps): Bump vuepress-theme-cosmos from 1.0.172 to 1.0.173 in /docs (#5390)

Bumps [vuepress-theme-cosmos](https://github.com/cosmos/vuepress-theme-cosmos) from 1.0.172 to 1.0.173.
- [Release notes](https://github.com/cosmos/vuepress-theme-cosmos/releases)
- [Commits](https://github.com/cosmos/vuepress-theme-cosmos/commits)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tess Rinearson <tess.rinearson@gmail.com>

docs/package.json

@@ -4,7 +4,7 @@
   "description": "Tendermint Core Documentation",
   "main": "index.js",
   "dependencies": {
-    "vuepress-theme-cosmos": "^1.0.172"
+    "vuepress-theme-cosmos": "^1.0.173"
   },
   "scripts": {
     "preserve": "./pre.sh",