Bump regexp_parser from 2.12.0 to 2.13.1

Bumps [regexp_parser](https://github.com/ammar/regexp_parser) from 2.12.0 to 2.13.1.
- [Changelog](https://github.com/ammar/regexp_parser/blob/master/CHANGELOG.md)
- [Commits](ammar/regexp_parser@v2.12.0...v2.13.1)

---
updated-dependencies:
- dependency-name: regexp_parser
  dependency-version: 2.13.1
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -64,7 +64,7 @@ GEM
     racc (1.8.1)
     rainbow (3.1.1)
     rake (13.4.2)
-    regexp_parser (2.12.0)
+    regexp_parser (2.13.1)
     rspec (3.13.2)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -187,7 +187,7 @@ CHECKSUMS
   racc (1.8.1) sha256=4a7f6929691dbec8b5209a0b373bc2614882b55fc5d2e447a21aaa691303d62f
   rainbow (3.1.1) sha256=039491aa3a89f42efa1d6dec2fc4e62ede96eb6acd95e52f1ad581182b79bc6a
   rake (13.4.2) sha256=cb825b2bd5f1f8e91ca37bddb4b9aaf345551b4731da62949be002fa89283701
-  regexp_parser (2.12.0) sha256=35a916a1d63190ab5c9009457136ae5f3c0c7512d60291d0d1378ba18ce08ebb
+  regexp_parser (2.13.1) sha256=5aedb6b7c35688f51e86eef17a15374dfd287c83f4ca644b2c5f3ec50a33b44b
   rspec (3.13.2) sha256=206284a08ad798e61f86d7ca3e376718d52c0bc944626b2349266f239f820587
   rspec-core (3.13.6) sha256=a8823c6411667b60a8bca135364351dda34cd55e44ff94c4be4633b37d828b2d
   rspec-expectations (3.13.5) sha256=33a4d3a1d95060aea4c94e9f237030a8f9eae5615e9bd85718fe3a09e4b58836