Bump logger from 1.6.3 to 1.6.4 in /.overcommit

Bumps [logger](https://github.com/ruby/logger) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/ruby/logger/releases)
- [Commits](ruby/logger@v1.6.3...v1.6.4)

---
updated-dependencies:
- dependency-name: logger
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

.overcommit/Gemfile.lock

@@ -17,7 +17,7 @@ GEM
     iniparse (1.5.0)
     json (2.9.0)
     language_server-protocol (3.17.0.3)
-    logger (1.6.3)
+    logger (1.6.4)
     overcommit (0.64.1)
       childprocess (>= 0.6.3, < 6)
       iniparse (~> 1.4)