Bump overcommit from 0.63.0 to 0.64.0

Bumps [overcommit](https://github.com/sds/overcommit) from 0.63.0 to 0.64.0.
- [Release notes](https://github.com/sds/overcommit/releases)
- [Changelog](https://github.com/sds/overcommit/blob/main/CHANGELOG.md)
- [Commits](sds/overcommit@v0.63.0...v0.64.0)

---
updated-dependencies:
- dependency-name: overcommit
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -30,7 +30,7 @@ GEM
     octokit (9.1.0)
       faraday (>= 1, < 3)
       sawyer (~> 0.9)
-    overcommit (0.63.0)
+    overcommit (0.64.0)
       childprocess (>= 0.6.3, < 6)
       iniparse (~> 1.4)
       rexml (~> 3.2)