Bump brakeman from 4.8.0 to 4.8.1 (#13652)

Bumps [brakeman](https://github.com/presidentbeef/brakeman) from 4.8.0 to 4.8.1.
- [Release notes](https://github.com/presidentbeef/brakeman/releases)
- [Changelog](https://github.com/presidentbeef/brakeman/blob/master/CHANGES.md)
- [Commits](https://github.com/presidentbeef/brakeman/compare/v4.8.0...v4.8.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Gemfile.lock

@@ -118,7 +118,7 @@ GEM
       ffi (~> 1.10.0)
     bootsnap (1.4.6)
       msgpack (~> 1.0)
-    brakeman (4.8.0)
+    brakeman (4.8.1)
     browser (4.0.0)
     builder (3.2.4)
     bullet (6.1.0)