Merge pull request #69 from exercism/dependabot/github_actions/docker…

…/setup-buildx-action-3.4.0

Bump docker/setup-buildx-action from 3.3.0 to 3.4.0

.github/workflows/docker.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # 2.3.4
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@d70bba72b1f3fd22344832f00baa16ece964efeb # 3.3.0
+        uses: docker/setup-buildx-action@4fd812986e6c8c2a69e18311145f9371337f27d4 # 3.4.0
 
       - name: Cache Docker layers
         uses: actions/cache@0c45773b623bea8c8e75f6c82b208c3cf94ea4f9 # 4.0.2