Bump the github-actions group with 2 updates

Bumps the github-actions group with 2 updates: [docker/setup-qemu-action](https://github.com/docker/setup-qemu-action) and [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action).


Updates `docker/setup-qemu-action` from 3.3.0 to 3.4.0
- [Release notes](https://github.com/docker/setup-qemu-action/releases)
- [Commits](docker/setup-qemu-action@53851d1...4574d27)

Updates `docker/setup-buildx-action` from 3.8.0 to 3.9.0
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@6524bf6...f7ce87c)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/testing.yml

@@ -18,10 +18,10 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
 
       - name: Set up QEMU (to support building on non-native architectures)
-        uses: docker/setup-qemu-action@53851d14592bedcffcf25ea515637cff71ef929a
+        uses: docker/setup-qemu-action@4574d27a4764455b42196d70a065bc6853246a25
 
       - name: Set up buildx
-        uses: docker/setup-buildx-action@6524bf65af31da8d45b59e8c27de4bd072b392f5
+        uses: docker/setup-buildx-action@f7ce87c1d6bead3e36075b2ce75da1f6cc28aaca
 
       - name: Restore images from the cache
         uses: ./gh-actions/restore-images