Bump docker/setup-buildx-action from 4.1.0 to 4.4.1

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 4.1.0 to 4.4.1.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@d7f5e7f...f87e599)

---
updated-dependencies:
- dependency-name: docker/setup-buildx-action
  dependency-version: 4.4.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/cpflow-promote-staging-to-production.yml

@@ -444,7 +444,7 @@ jobs:
           echo "image=${staging_image}" >> "$GITHUB_OUTPUT"
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0
+        uses: docker/setup-buildx-action@f87e5991a6d7451dcb8d9637bfbc97413f497069 # v4.4.1
 
       - name: Copy image from staging
         id: copy-image