Update dependency voxpupuli-release to v5

Author: renovate[bot]

Gemfile

@@ -25,7 +25,7 @@ group :system_tests do
 end
 
 group :release do
-  gem 'voxpupuli-release', '~> 3.0',  :require => false
+  gem 'voxpupuli-release', '~> 5.0',  :require => false
 end
 
 gem 'rake', :require => false