Bump sidekiq from 6.2.1 to 6.5.1

Gemfile

@@ -96,7 +96,7 @@ gem "rolify", "~> 6.0" # Very simple Roles library
 gem "rouge", "~> 3.26" # A pure-ruby code highlighter
 gem "rubyzip", "~> 2.3" # Rubyzip is a ruby library for reading and writing zip files
 gem "s3_direct_upload", "~> 0.1" # Direct Upload to Amazon S3
-gem "sidekiq", "~> 6.2.1" # Sidekiq is used to process background jobs with the help of Redis
+gem "sidekiq", "~> 6.5.1" # Sidekiq is used to process background jobs with the help of Redis
 gem "sidekiq-cron", "~> 1.1" # Allows execution of scheduled cron jobs as specific times
 gem "sidekiq-unique-jobs", "~> 7.0.11" # Ensures that Sidekiq jobs are unique when enqueued
 gem "sitemap_generator", "~> 6.1" # SitemapGenerator is a framework-agnostic XML Sitemap generator

Gemfile.lock

@@ -532,7 +532,7 @@ GEM
     pusher-signature (0.1.8)
     raabro (1.4.0)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-attack (6.5.0)
       rack (>= 1.0, < 3)
     rack-cors (1.1.1)
@@ -718,7 +718,7 @@ GEM
     shellany (0.0.1)
     shoulda-matchers (4.5.1)
       activesupport (>= 4.2.0)
-    sidekiq (6.2.1)
+    sidekiq (6.5.1)
       connection_pool (>= 2.2.2)
       rack (~> 2.0)
       redis (>= 4.2.0)
@@ -964,7 +964,7 @@ DEPENDENCIES
   s3_direct_upload (~> 0.1)
   sassc-rails (~> 2.1.2)
   shoulda-matchers (~> 4.5.1)
-  sidekiq (~> 6.2.1)
+  sidekiq (~> 6.5.1)
   sidekiq-cron (~> 1.1)
   sidekiq-unique-jobs (~> 7.0.11)
   simplecov (~> 0.21.2)