Release v2.2.1

What's Changed

• Bump actions/checkout from 3 to 4 by @dependabot in #18
• Bump docker/build-push-action from 4 to 5 by @dependabot in #20
• Bump docker/setup-buildx-action from 2 to 3 by @dependabot in #21
• Bump ubuntu to 19478ce by @dependabot in #33

Full Changelog: v2.2.0...v2.2.1