Bump sidekiq from 5.2.2 to 5.2.3 (#9241)

Bumps [sidekiq](https://github.com/mperham/sidekiq) from 5.2.2 to 5.2.3.
- [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/v5.2.2...v5.2.3)

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

Gemfile.lock

@@ -548,7 +548,7 @@ GEM
     scss_lint (0.57.1)
       rake (>= 0.9, < 13)
       sass (~> 3.5, >= 3.5.5)
-    sidekiq (5.2.2)
+    sidekiq (5.2.3)
       connection_pool (~> 2.2, >= 2.2.2)
       rack-protection (>= 1.5.0)
       redis (>= 3.3.5, < 5)