Upgrade gitlab-labkit and rails-controller-testing

Gemfile.lock

@@ -359,9 +359,9 @@ GEM
     gitaly (1.65.0)
       grpc (~> 1.0)
     github-markup (1.7.0)
-    gitlab-labkit (0.5.2)
-      actionpack (~> 5)
-      activesupport (~> 5)
+    gitlab-labkit (0.7.0)
+      actionpack (>= 5.0.0, < 6.1.0)
+      activesupport (>= 5.0.0, < 6.1.0)
       grpc (~> 1.19)
       jaeger-client (~> 0.10)
       opentracing (~> 0.4)
@@ -761,10 +761,10 @@ GEM
       bundler (>= 1.3.0)
       railties (= 5.2.3)
       sprockets-rails (>= 2.0.0)
-    rails-controller-testing (1.0.2)
-      actionpack (~> 5.x, >= 5.0.1)
-      actionview (~> 5.x, >= 5.0.1)
-      activesupport (~> 5.x)
+    rails-controller-testing (1.0.4)
+      actionpack (>= 5.0.1.x)
+      actionview (>= 5.0.1.x)
+      activesupport (>= 5.0.1.x)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)