Update docker/setup-buildx-action digest to 8d2750c

Author: renovate[bot]

.github/workflows/ci.yml

@@ -89,7 +89,7 @@ jobs:
           platforms: all
 
       - name: Setup Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
         with:
           version: ${{ env.DOCKER_BUILDX_VERSION }}
           install: true