Bump the actions-minor group with 2 updates

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


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)

Updates `sigstore/cosign-installer` from 3.7.0 to 3.8.0
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@dc72c7d...c56c2d3)

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

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

.github/workflows/deploy.yml

@@ -35,7 +35,7 @@ jobs:
         uses: docker/setup-qemu-action@v3
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@6524bf65af31da8d45b59e8c27de4bd072b392f5 # v3.8.0
+        uses: docker/setup-buildx-action@f7ce87c1d6bead3e36075b2ce75da1f6cc28aaca # v3.9.0
 
       - name: Extract Docker Metadata
         id: meta
@@ -55,7 +55,7 @@ jobs:
 
       - name: Install Cosign
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@dc72c7d5c4d10cd6bcb8cf6e3fd625a9e5e537da #v3.7.0
+        uses: sigstore/cosign-installer@c56c2d3e59e4281cc41dea2217323ba5694b171e #v3.8.0
         with:
           cosign-release: 'v2.1.1'