Update to golang 1.19
Summary
Changes the golang version to build GitLab to 1.19
Part of epic Update golang to 1.19 (&9495 - closed)
Matching CNG MR: gitlab-org/build/CNG!1370 (merged) (note the omnibus builder can go in earlier, but the omnibus update and CNG should go in around the same time and be announced)
Edited by DJ Mountney