Release v4

What’s Changed

• 🎨 download yq if necessary (#38) @flaxel
• 👷 docker login only if docker enabled (#39) @flaxel
• ⬆️ Manual Dependabot PR for gha_workflows (#35) @flaxel
• Add staffbase doc (#36) @franzuhlig
• ⏪ revert direct gitops usage (#31) @flaxel
• ⬆️ Manual Dependabot PR for gha_workflows (#30) @flaxel
• Bump docker/setup-buildx-action from 1 to 2 (#27) @dependabot
• Bump docker/login-action from 1 to 2 (#28) @dependabot
• Bump docker/build-push-action from 2 to 3 (#26) @dependabot

Migration

• possibility to use the action as normal action without checkout the code
• renaming of the variables - added dashes, f.e. dockerimage to docker-image