Build(deps-dev): Bump rubocop from 1.63.5 to 1.64.0 in /spec (#418)

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.63.5 to 1.64.0.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.63.5...v1.64.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

spec/Gemfile.lock

@@ -11,9 +11,9 @@ GEM
     parser (3.3.1.0)
       ast (~> 2.4.1)
       racc
-    racc (1.7.3)
+    racc (1.8.0)
     rainbow (3.1.1)
-    regexp_parser (2.9.0)
+    regexp_parser (2.9.2)
     rexml (3.2.8)
       strscan (>= 3.0.9)
     rspec (3.13.0)
@@ -29,7 +29,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
     rspec-support (3.13.0)
-    rubocop (1.63.5)
+    rubocop (1.64.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)