Bump racc from 1.8.0 to 1.8.1 (#4464)

Bumps [racc](https://github.com/ruby/racc) from 1.8.0 to 1.8.1.
- [Release notes](https://github.com/ruby/racc/releases)
- [Changelog](https://github.com/ruby/racc/blob/master/ChangeLog)
- [Commits](ruby/racc@v1.8.0...v1.8.1)

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

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

Gemfile.lock

@@ -495,7 +495,7 @@ GEM
     public_suffix (6.0.1)
     puma (6.4.2)
       nio4r (~> 2.0)
-    racc (1.8.0)
+    racc (1.8.1)
     rack (2.2.9)
     rack-test (2.1.0)
       rack (>= 1.3)