Update docker/setup-buildx-action digest to 2b51285

Author: renovate[bot]

.github/workflows/pull-request.yaml

@@ -12,7 +12,7 @@ jobs:
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
 
       - name: Setup buildx
-        uses: docker/setup-buildx-action@0d103c3126aa41d772a8362f6aa67afac040f80c # v3
+        uses: docker/setup-buildx-action@2b51285047da1547ffb1b2203d8be4c0af6b1f20 # v3
 
       - name: Build container image
         uses: docker/build-push-action@af5a7ed5ba88268d5278f7203fb52cd833f66d6e # v5