Bump docker/build-push-action from 2.5.0 to 2.6.1

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2.5.0 to 2.6.1.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v2.5.0...v2.6.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/build_latest.yml

@@ -36,7 +36,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push latest Debian image
-        uses: docker/build-push-action@v2.5.0
+        uses: docker/build-push-action@v2.6.1
         with:
           context: ./src
           file: ./src/Dockerfile
@@ -69,7 +69,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push latest Alpine image
-        uses: docker/build-push-action@v2.5.0
+        uses: docker/build-push-action@v2.6.1
         with:
           context: ./src
           file: ./src/Dockerfile-alpine

.github/workflows/build_tags.yml

@@ -31,7 +31,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push all Debian images
-        uses: docker/build-push-action@v2.5.0
+        uses: docker/build-push-action@v2.6.1
         with:
           context: ./src
           file: ./src/Dockerfile
@@ -73,7 +73,7 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push all Alpine images
-        uses: docker/build-push-action@v2.5.0
+        uses: docker/build-push-action@v2.6.1
         with:
           context: ./src
           file: ./src/Dockerfile-alpine