fix(deps): update docker:20.10.22-dind docker digest to 7f3a7e0 (!1274)

mentioned in merge request pipeline-components/org/renovate!160 (merged)

mentioned in merge request zerok/docker-cookiecutter!16 (merged)

mentioned in merge request ethima/dependency-management!30 (merged)

mentioned in merge request kubitus-project/renovate-runner!104 (merged)

mentioned in merge request gitlabracadabra/renovate-runner!2 (merged)