v2.21.0

Does the PR have any schema changes?

Looking good! No breaking changes found.

New resources:

• ecr.RegistryImage

What's Changed

• Fix provider name in .ci-mgmt.yaml by @flostadler in #1484
• Increase timeout for TestAccEcsParallel by @flostadler in #1489
• Add ecr.RegistryImage resource for pushing existing images to ECR by @flostadler in #1464
• Fix binary signing for darwin-arm64 by @t0yv0 in #1491

Full Changelog: v2.20.1...v2.21.0