build(deps-dev): bump brakeman from 6.1.2 to 6.2.1 (rubyforgood#4628)

Bumps [brakeman](https://github.com/presidentbeef/brakeman) from 6.1.2 to 6.2.1.
- [Release notes](https://github.com/presidentbeef/brakeman/releases)
- [Changelog](https://github.com/presidentbeef/brakeman/blob/main/CHANGES.md)
- [Commits](presidentbeef/brakeman@v6.1.2...v6.2.1)

---
updated-dependencies:
- dependency-name: brakeman
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -115,7 +115,7 @@ GEM
       autoprefixer-rails (>= 9.1.0)
       popper_js (>= 2.11.6, < 3)
       sassc-rails (>= 2.0.0)
-    brakeman (6.1.2)
+    brakeman (6.2.1)
       racc
     bugsnag (6.27.1)
       concurrent-ruby (~> 1.0)