Bump rspec_api_documentation from 6.0.0 to 6.1.0

Bumps [rspec_api_documentation](https://github.com/zipmark/rspec_api_documentation) from 6.0.0 to 6.1.0.
- [Release notes](https://github.com/zipmark/rspec_api_documentation/releases)
- [Commits](zipmark/rspec_api_documentation@6.0.0...6.1.0)

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

Gemfile.lock

@@ -141,7 +141,7 @@ GEM
     minitest (5.11.3)
     msgpack (1.2.4)
     multi_json (1.13.1)
-    mustache (1.0.5)
+    mustache (1.1.0)
     mustermann (1.0.3)
     nio4r (2.3.1)
     nokogiri (1.10.3)
@@ -213,7 +213,7 @@ GEM
       rspec-mocks (~> 3.8.0)
     rspec-core (3.8.0)
       rspec-support (~> 3.8.0)
-    rspec-expectations (3.8.1)
+    rspec-expectations (3.8.3)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-mocks (3.8.0)
@@ -228,7 +228,7 @@ GEM
       rspec-mocks (~> 3.8.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
-    rspec_api_documentation (6.0.0)
+    rspec_api_documentation (6.1.0)
       activesupport (>= 3.0.0)
       mustache (~> 1.0, >= 0.99.4)
       rspec (~> 3.0)