Bump rspec-collection_matchers from 1.1.3 to 1.2.0

Bumps [rspec-collection_matchers](https://github.com/rspec/rspec-collection_matchers) from 1.1.3 to 1.2.0.
- [Release notes](https://github.com/rspec/rspec-collection_matchers/releases)
- [Changelog](https://github.com/rspec/rspec-collection_matchers/blob/master/Changelog.md)
- [Commits](rspec/rspec-collection_matchers@v1.1.3...v1.2.0)

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

Author: dependabot[bot]

Gemfile.lock

@@ -357,7 +357,7 @@ GEM
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
       rspec-mocks (~> 3.8.0)
-    rspec-collection_matchers (1.1.3)
+    rspec-collection_matchers (1.2.0)
       rspec-expectations (>= 2.99.0.beta1)
     rspec-core (3.8.2)
       rspec-support (~> 3.8.0)