Bump parser from 3.3.6.0 to 3.3.7.0

Bumps [parser](https://github.com/whitequark/parser) from 3.3.6.0 to 3.3.7.0.
- [Changelog](https://github.com/whitequark/parser/blob/master/CHANGELOG.md)
- [Commits](whitequark/parser@v3.3.6.0...v3.3.7.0)

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

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

Gemfile.lock

@@ -68,7 +68,7 @@ GEM
     nkf (0.2.0)
     ostruct (0.6.1)
     parallel (1.26.3)
-    parser (3.3.6.0)
+    parser (3.3.7.0)
       ast (~> 2.4.1)
       racc
     power_assert (2.0.5)