build(deps-dev): bump rspec-rails in /gemfiles/rails-6.1

Bumps [rspec-rails](https://github.com/rspec/rspec-rails) from 6.1.4 to 6.1.5.
- [Changelog](https://github.com/rspec/rspec-rails/blob/main/Changelog.md)
- [Commits](rspec/rspec-rails@v6.1.4...v6.1.5)

---
updated-dependencies:
- dependency-name: rspec-rails
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

gemfiles/rails-6.1/Gemfile.lock

@@ -163,7 +163,7 @@ GEM
     rspec-mocks (3.13.1)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
-    rspec-rails (6.1.4)
+    rspec-rails (6.1.5)
       actionpack (>= 6.1)
       activesupport (>= 6.1)
       railties (>= 6.1)