Merge branch 'bump-go-1.21' into 'master'

Use builder image with Go 1.21

See merge request https://gitlab.com/gitlab-org/omnibus-gitlab/-/merge_requests/7417

Merged-by: Robert Marshall <rmarshall@gitlab.com>
Approved-by: Robert Marshall <rmarshall@gitlab.com>
Co-authored-by: Balasankar 'Balu' C <balasankar@gitlab.com>

Author: rmarshall-gitlab

.gitlab-ci.yml

@@ -42,7 +42,7 @@ variables:
   # To be used for images that exist only on dev.gitlab.org
   DEV_BUILDER_IMAGE_REGISTRY: 'dev.gitlab.org:5005/cookbooks/gitlab-omnibus-builder'
   PUBLIC_BUILDER_IMAGE_REGISTRY: "registry.gitlab.com/gitlab-org/gitlab-omnibus-builder"
-  BUILDER_IMAGE_REVISION: "5.4.0"
+  BUILDER_IMAGE_REVISION: "5.5.0"
   # The registry to pull the assets image from
   ASSET_REGISTRY: "${CI_REGISTRY}"
   ASSET_SYNC_EXISTING_REMOTE_FILES: "keep"