Bump rubocop from 1.63.5 to 1.64.1

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.63.5 to 1.64.1.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.63.5...v1.64.1)

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

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

Gemfile.lock

@@ -138,7 +138,7 @@ GEM
       racc (~> 1.4)
     optparse (0.5.0)
     parallel (1.24.0)
-    parser (3.3.1.0)
+    parser (3.3.2.0)
       ast (~> 2.4.1)
       racc
     power_assert (2.0.3)
@@ -156,7 +156,7 @@ GEM
     rexml (3.2.8)
       strscan (>= 3.0.9)
     ricecream (0.2.1)
-    rubocop (1.63.5)
+    rubocop (1.64.1)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)