Bump regexp_parser from 2.8.3 to 2.9.0

Bumps [regexp_parser](https://github.com/ammar/regexp_parser) from 2.8.3 to 2.9.0.
- [Changelog](https://github.com/ammar/regexp_parser/blob/master/CHANGELOG.md)
- [Commits](ammar/regexp_parser@v2.8.3...v2.9.0)

---
updated-dependencies:
- dependency-name: regexp_parser
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -152,7 +152,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    regexp_parser (2.8.3)
+    regexp_parser (2.9.0)
     rexml (3.2.6)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)