Pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	pinDigest	→ 3d3c42e
actions/download-artifact	action	pinDigest	→ 3e5f45b
actions/upload-artifact	action	pinDigest	→ 043fb46
docker/build-push-action	action	pinDigest	→ 53b7df9
docker/login-action	action	pinDigest	→ dbcb813
docker/metadata-action	action	pinDigest	→ dc80280
docker/setup-buildx-action	action	pinDigest	→ 37fe631
peter-evans/repository-dispatch	action	pinDigest	→ 28959ce

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