Bump rspec-mocks from 3.12.5 to 3.12.6 (#341)

Bumps [rspec-mocks](https://github.com/rspec/rspec-mocks) from 3.12.5 to 3.12.6.
- [Release notes](https://github.com/rspec/rspec-mocks/releases)
- [Changelog](https://github.com/rspec/rspec-mocks/blob/main/Changelog.md)
- [Commits](rspec/rspec-mocks@v3.12.5...v3.12.6)

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

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

Gemfile.lock

@@ -35,7 +35,7 @@ GEM
     rspec-expectations (3.12.3)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.5)
+    rspec-mocks (3.12.6)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-support (3.12.1)