Bump parser from 2.7.0.3 to 2.7.0.4

Bumps [parser](https://github.com/whitequark/parser) from 2.7.0.3 to 2.7.0.4.
- [Release notes](https://github.com/whitequark/parser/releases)
- [Changelog](https://github.com/whitequark/parser/blob/master/CHANGELOG.md)
- [Commits](whitequark/parser@v2.7.0.3...v2.7.0.4)

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

Gemfile.lock

@@ -89,7 +89,7 @@ GEM
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
     parallel (1.19.1)
-    parser (2.7.0.3)
+    parser (2.7.0.4)
       ast (~> 2.4.0)
     pry (0.12.2)
       coderay (~> 1.1.0)