Merge branch 'sh-fix-removed-support-bot-column' into 'master'

Ignore support_bot column in users table

Closes #67295

See merge request gitlab-org/gitlab-ce!32933

(cherry picked from commit 3c372d87)

c816e768 Ignore support_bot column in users table

app/models/user.rb

@@ -55,6 +55,9 @@ class User < ApplicationRecord
   BLOCKED_MESSAGE = "Your account has been blocked. Please contact your GitLab " \
                     "administrator if you think this is an error."
+  # Removed in GitLab 12.3. Keep until after 2019-09-22.
+  self.ignored_columns += %i[support_bot]
+
   # Override Devise::Models::Trackable#update_tracked_fields!
   # to limit database writes to at most once every hour
   # rubocop: disable CodeReuse/ServiceClass