Bump rspec-mocks from 3.9.0 to 3.9.1

Bumps [rspec-mocks](https://github.com/rspec/rspec-mocks) from 3.9.0 to 3.9.1.
- [Release notes](https://github.com/rspec/rspec-mocks/releases)
- [Changelog](https://github.com/rspec/rspec-mocks/blob/master/Changelog.md)
- [Commits](rspec/rspec-mocks@v3.9.0...v3.9.1)

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

Author: dependabot-preview[bot]

Gemfile.lock

@@ -292,7 +292,7 @@ GEM
     rspec-expectations (3.9.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
-    rspec-mocks (3.9.0)
+    rspec-mocks (3.9.1)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-rails (3.9.0)