Bump docker/setup-buildx-action from 3.1.0 to 3.2.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 3.1.0 to 3.2.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@0d103c3...2b51285)

---
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/testing.yml

@@ -62,7 +62,7 @@ jobs:
       - name: Set up QEMU (to support building on non-native architectures)
         uses: docker/setup-qemu-action@68827325e0b33c7199eb31dd4e31fbe9023e06e3
       - name: Set up buildx
-        uses: docker/setup-buildx-action@0d103c3126aa41d772a8362f6aa67afac040f80c
+        uses: docker/setup-buildx-action@2b51285047da1547ffb1b2203d8be4c0af6b1f20
 
       - name: Test the entire release
         env: