Merge branch 'docker-auth-credential-helper-allowlist' into 'main'

What does this MR do?

Merge branch 'docker-auth-credential-helper-allowlist' into 'main'

Gate job-supplied Docker credential helpers behind an allowlist

See merge request https://gitlab.com/gitlab-org/security/gitlab-runner/-/merge_requests/110

Merged-by: Arran Walker ajwalker@gitlab.com Approved-by: Taka Nishida tnishida@gitlab.com Approved-by: Félix Veillette-Potvin fveillette@gitlab.com Reviewed-by: Félix Veillette-Potvin fveillette@gitlab.com Reviewed-by: GitLab Duo gitlab-duo@gitlab.com Reviewed-by: Lachlan Grant lgrant@gitlab.com

(cherry picked from commit 759e448b)

f8a97126 Gate job-supplied Docker credential helpers behind an allowlist

Co-authored-by: Arran Walker ajwalker@gitlab.com

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