Update overcommit requirement from 0.63.0 to 0.64.0

Updates the requirements on [overcommit](https://github.com/sds/overcommit) to permit the latest version.
- [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:production
...

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

Gemfile

@@ -12,7 +12,7 @@ gem 'rspec-its', '~> 1.0'
 gem 'appraisal'
 
 # Run all pre-commit hooks via Overcommit during CI runs
-gem 'overcommit', '0.63.0'
+gem 'overcommit', '0.64.0'
 
 # Pin tool versions (which are executed by Overcommit) for CI builds
 gem 'rubocop', '1.64.1'