Bump docker/build-push-action from 4 to 6

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 4 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v4...v6)

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

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

.github/workflows/deploy-runners.yml

@@ -49,7 +49,7 @@ jobs:
         id: vars
         run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
       - name: Build and push Docker images (${{ matrix.module }})
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           context: ./${{ matrix.module }}
           pull: true

.github/workflows/deploy-server.yml

@@ -38,7 +38,7 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build and push Docker images
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           context: .
           pull: true

.github/workflows/deploy-workers.yml

@@ -49,7 +49,7 @@ jobs:
         id: vars
         run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
       - name: Build and push Docker images (${{ matrix.module }})
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v6
         with:
           context: ./${{ matrix.module }}
           pull: true