Bump docker/build-push-action from 4.1.1 to 4.2.1

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4.1.1 to 4.2.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4.1.1...v4.2.1)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build_latest.yml

@@ -34,7 +34,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push latest Debian image
-        uses: docker/build-push-action@v4.1.1
+        uses: docker/build-push-action@v4.2.1
         with:
           context: ./src
           file: ./src/Dockerfile
@@ -64,7 +64,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push latest Alpine image
-        uses: docker/build-push-action@v4.1.1
+        uses: docker/build-push-action@v4.2.1
         with:
           context: ./src
           file: ./src/Dockerfile-alpine

.github/workflows/build_tags.yml

@@ -30,7 +30,7 @@ jobs:
         run: bash .github/version_extractor.sh ${GITHUB_REF} >> $GITHUB_ENV
 
       - name: Build and push all Debian images
-        uses: docker/build-push-action@v4.1.1
+        uses: docker/build-push-action@v4.2.1
         with:
           context: ./src
           file: ./src/Dockerfile
@@ -70,7 +70,7 @@ jobs:
         run: bash .github/version_extractor.sh ${GITHUB_REF} >> $GITHUB_ENV
 
       - name: Build and push all Alpine images
-        uses: docker/build-push-action@v4.1.1
+        uses: docker/build-push-action@v4.2.1
         with:
           context: ./src
           file: ./src/Dockerfile-alpine