chore: bump docker/build-push-action from 2 to 6 (#40)

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 2 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v2...v6)

---
updated-dependencies:
- dependency-name: docker/build-push-action
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: caroldelwing <[email protected]>
Co-authored-by: Adelina Simion <[email protected]>

Author: 3 people

.github/workflows/release.yaml

@@ -56,7 +56,7 @@ jobs:
       - name: Build and Push Docker Image
         if: ${{ steps.version.outputs.VERSION != ''}}
         id: build-and-push
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v6
         with:
           context: .
           build-args: VERSION=${{steps.version.outputs.VERSION}}
@@ -128,7 +128,7 @@ jobs:
       - name: Build and Push Docker Image
         if: ${{ steps.version.outputs.VERSION != ''}}
         id: build-and-push
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: Dockerfile.Caddy

.github/workflows/test.yaml

@@ -44,7 +44,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and Push Docker Image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64
@@ -81,7 +81,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and Push Docker Image
-        uses: docker/build-push-action@v2
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: Dockerfile.Caddy