chore(deps): update ghcr.io/griefed/gitlab-ci-cd docker tag to v2.2.6

This MR contains the following updates:

Package	Type	Update	Change
ghcr.io/griefed/gitlab-ci-cd	image	patch	2.2.5 -> 2.2.6
ghcr.io/griefed/gitlab-ci-cd	service-image	patch	2.2.5 -> 2.2.6

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