ci: bump docker/build-push-action from 5 to 6 (#10144)

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](https://github.com/docker/build-push-action/compare/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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci-main.yml

@@ -240,7 +240,7 @@ jobs:
       - name: generate ts client
         run: make gen-client-ts
       - name: Build Docker Image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           secrets: |

.github/workflows/ci-outpost.yml

@@ -96,7 +96,7 @@ jobs:
       - name: Generate API
         run: make gen-client-go
       - name: Build Docker Image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           tags: ${{ steps.ev.outputs.imageTags }}
           file: ${{ matrix.type }}.Dockerfile

.github/workflows/release-publish.yml

@@ -40,7 +40,7 @@ jobs:
           mkdir -p ./gen-ts-api
           mkdir -p ./gen-go-api
       - name: Build Docker Image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           context: .
           push: true
@@ -94,7 +94,7 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Build Docker Image
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           push: true
           tags: ${{ steps.ev.outputs.imageTags }}