Bump sidekiq-unique-jobs from 5.0.10 to 6.0.8 (#9801)

Bumps [sidekiq-unique-jobs](https://github.com/mhenrixon/sidekiq-unique-jobs) from 5.0.10 to 6.0.8.
- [Release notes](https://github.com/mhenrixon/sidekiq-unique-jobs/releases)
- [Changelog](https://github.com/mhenrixon/sidekiq-unique-jobs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mhenrixon/sidekiq-unique-jobs/compare/v5.0.10...v6.0.8)

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

Gemfile

@@ -75,7 +75,7 @@ gem 'rqrcode', '~> 0.10'
 gem 'sanitize', '~> 5.0'
 gem 'sidekiq', '~> 5.2'
 gem 'sidekiq-scheduler', '~> 3.0'
-gem 'sidekiq-unique-jobs', '~> 5.0'
+gem 'sidekiq-unique-jobs', '~> 6.0'
 gem 'sidekiq-bulk', '~>0.2.0'
 gem 'simple-navigation', '~> 4.0'
 gem 'simple_form', '~> 4.1'

Gemfile.lock

@@ -563,8 +563,9 @@ GEM
       rufus-scheduler (~> 3.2)
       sidekiq (>= 3)
       tilt (>= 1.4.0)
-    sidekiq-unique-jobs (5.0.10)
+    sidekiq-unique-jobs (6.0.8)
-      sidekiq (>= 4.0, <= 6.0)
+      concurrent-ruby (~> 1.0, >= 1.0.5)
+      sidekiq (>= 4.0, < 6.0)
       thor (~> 0)
     simple-navigation (4.0.5)
       activesupport (>= 2.3.2)
@@ -750,7 +751,7 @@ DEPENDENCIES
   sidekiq (~> 5.2)
   sidekiq-bulk (~> 0.2.0)
   sidekiq-scheduler (~> 3.0)
-  sidekiq-unique-jobs (~> 5.0)
+  sidekiq-unique-jobs (~> 6.0)
   simple-navigation (~> 4.0)
   simple_form (~> 4.1)
   simplecov (~> 0.16)