Bump docker/setup-buildx-action from 2.5.0 to 2.6.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@4b4e9c3...6a58db7)

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

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

.github/workflows/build-oss.yml

@@ -48,7 +48,7 @@ jobs:
         if: ${{ github.event_name != 'pull_request' && ! startsWith(github.ref, 'refs/heads/release-') }}
 
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@4b4e9c3e2d4531116a6f8ba8e71fc6e2cb6e6c8c # v2.5.0
+        uses: docker/setup-buildx-action@6a58db7e0d21ca03e6c44877909e80e45217eed2 # v2.6.0
 
       - name: DockerHub Login
         uses: docker/login-action@465a07811f14bebb1938fbed4728c6a1ff8901fc # v2.2.0

.github/workflows/build-plus.yml

@@ -49,7 +49,7 @@ jobs:
         if: github.event_name != 'pull_request'
 
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@4b4e9c3e2d4531116a6f8ba8e71fc6e2cb6e6c8c # v2.5.0
+        uses: docker/setup-buildx-action@6a58db7e0d21ca03e6c44877909e80e45217eed2 # v2.6.0
 
       - name: Authenticate to Google Cloud
         id: auth

.github/workflows/ci.yml

@@ -175,7 +175,7 @@ jobs:
           path: ${{ github.workspace }}/dist
           key: nginx-ingress-${{ github.run_id }}-${{ github.run_number }}
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@4b4e9c3e2d4531116a6f8ba8e71fc6e2cb6e6c8c # v2.5.0
+        uses: docker/setup-buildx-action@6a58db7e0d21ca03e6c44877909e80e45217eed2 # v2.6.0
       - name: Build Docker Image ${{ matrix.image }}
         uses: docker/build-push-action@3b5e8027fcad23fda98b2e3ac259d8d67585f671 # v4.0.0
         with:
@@ -264,7 +264,7 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@4b4e9c3e2d4531116a6f8ba8e71fc6e2cb6e6c8c # v2.5.0
+        uses: docker/setup-buildx-action@6a58db7e0d21ca03e6c44877909e80e45217eed2 # v2.6.0
       - name: Build Test-Runner Container
         uses: docker/build-push-action@3b5e8027fcad23fda98b2e3ac259d8d67585f671 # v4.0.0
         with: