Bump sidekiq from 6.0.4 to 6.0.7 (#13630)

Bumps [sidekiq](https://github.com/mperham/sidekiq) from 6.0.4 to 6.0.7.
- [Release notes](https://github.com/mperham/sidekiq/releases)
- [Changelog](https://github.com/mperham/sidekiq/blob/master/Changes.md)
- [Commits](https://github.com/mperham/sidekiq/compare/v6.0.4...v6.0.7

)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Gemfile.lock

@@ -565,9 +565,9 @@ GEM
       nokogiri (>= 1.8.0)
       nokogumbo (~> 2.0)
     semantic_range (2.3.0)
-    sidekiq (6.0.4)
+    sidekiq (6.0.7)
       connection_pool (>= 2.2.2)
-      rack (>= 2.0.0)
+      rack (~> 2.0)
       rack-protection (>= 2.0.0)
       redis (>= 4.1.0)
     sidekiq-bulk (0.2.0)