Allow newer version in the archive to satisfy the requirement

--- a/Gemfile
+++ b/Gemfile
@@ -193,7 +193,7 @@
 gem 'sidekiq', '~> 5.2','>= 5.2.7'
 gem 'sidekiq-cron', '~> 1.0'
 gem 'redis-namespace', '~> 1.8','>= 1.8.1'
-gem 'gitlab-sidekiq-fetcher', '0.5.6', require: 'sidekiq-reliable-fetch'
+gem 'gitlab-sidekiq-fetcher', '~> 0.6.1', require: 'sidekiq-reliable-fetch'
 
 # Cron Parser
 gem 'fugit', '~> 1.2','>= 1.2.1'