Merge branch 'sh-fix-omnibus-helper-constant-error' into 'master'

Fix unintialized constant exception handler error

See merge request https://gitlab.com/gitlab-org/omnibus-gitlab/-/merge_requests/7175

Merged-by: Balasankar 'Balu' C <[email protected]>
Approved-by: João Alexandre Cunha <[email protected]>
Approved-by: Balasankar 'Balu' C <[email protected]>
Co-authored-by: Stan Hu <[email protected]>

Author: balasankarc

files/gitlab-cookbooks/package/libraries/handlers/gitlab.rb

@@ -16,6 +16,7 @@
 
 require 'chef/handler'
 require 'rainbow'
+require_relative '../omnibus_helper'
 
 module GitLabHandler
   class Exception < Chef::Handler