Bump rspec-rails from 5.1.1 to 5.1.2

Bumps [rspec-rails](https://github.com/rspec/rspec-rails) from 5.1.1 to 5.1.2.
- [Release notes](https://github.com/rspec/rspec-rails/releases)
- [Changelog](https://github.com/rspec/rspec-rails/blob/main/Changelog.md)
- [Commits](rspec/rspec-rails@v5.1.1...v5.1.2)

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

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

Gemfile.lock

@@ -227,7 +227,7 @@ GEM
       thor (>= 0.14, < 2.0)
     json (2.3.0)
     jwt (2.3.0)
-    loofah (2.14.0)
+    loofah (2.16.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -347,7 +347,7 @@ GEM
     rspec-mocks (3.10.3)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
-    rspec-rails (5.1.1)
+    rspec-rails (5.1.2)
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       railties (>= 5.2)