Bump rspec-mocks from 3.12.3 to 3.12.6

Bumps [rspec-mocks](https://github.com/rspec/rspec-mocks) from 3.12.3 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@v3.12.3...v3.12.6)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -45,7 +45,7 @@ GEM
     rspec-expectations (3.12.3)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.3)
+    rspec-mocks (3.12.6)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-retry (0.6.2)