chore(action): Bump docker/build-push-action from 5 to 6

Bumps [docker/build-push-action](https://github.com/docker/build-push-action) from 5 to 6.
- [Release notes](https://github.com/docker/build-push-action/releases)
- [Commits](docker/build-push-action@v5...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/ci.yaml

@@ -40,7 +40,7 @@ jobs:
                 make test
 
             - name: Build AMD64 binary
-              uses: docker/build-push-action@v5
+              uses: docker/build-push-action@v6
               if: github.ref == 'refs/heads/main'
               with:
                 tags: result:amd64
@@ -52,7 +52,7 @@ jobs:
                 push: false
 
             - name: Build ARM v7 binary
-              uses: docker/build-push-action@v5
+              uses: docker/build-push-action@v6
               if: github.ref == 'refs/heads/main'
               with:
                 tags: result:arm-v7