chore(deps): bump docker/metadata-action from 3 to 4 (argoproj#2292)

Bumps [docker/metadata-action](https://github.com/docker/metadata-action) from 3 to 4.
- [Release notes](https://github.com/docker/metadata-action/releases)
- [Upgrade guide](https://github.com/docker/metadata-action/blob/master/UPGRADE.md)
- [Commits](docker/metadata-action@v3...v4)

---
updated-dependencies:
- dependency-name: docker/metadata-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Signed-off-by: dependabot[bot] <support@github.com>
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.github/workflows/docker-publish.yml

@@ -29,7 +29,7 @@ jobs:
 
       - name: Docker meta (controller)
         id: controller-meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: |
             quay.io/argoproj/argo-rollouts
@@ -41,7 +41,7 @@ jobs:
 
       - name: Docker meta (plugin)
         id: plugin-meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: |
             quay.io/argoproj/kubectl-argo-rollouts

.github/workflows/release.yaml

@@ -37,7 +37,7 @@ jobs:
 
       - name: Docker meta (controller)
         id: controller-meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: |
             quay.io/argoproj/argo-rollouts
@@ -49,7 +49,7 @@ jobs:
 
       - name: Docker meta (plugin)
         id: plugin-meta
-        uses: docker/metadata-action@v3
+        uses: docker/metadata-action@v4
         with:
           images: |
             quay.io/argoproj/kubectl-argo-rollouts