Added

• multiple regions process in parallel (#15, thanks @BEvgeniyS)

• Support mutability tag (#14, thanks @athurn)

  - seek-oss/create-ecr#v1.5.0:
      name: my-repo
      image-tag-mutability: IMMUTABLE  

To upgrade, update your pipeline.yml files:

steps:
  - label: ecr
    plugins:
-     - seek-oss/create-ecr#v1.4.0:
+     - seek-oss/create-ecr#v1.5.0:
          name: my-repo