WIP: use forked docker-cache with fix for Bash path

.github/workflows/macos.yaml

@@ -94,7 +94,7 @@ jobs:
           brew install bash
           ln -s "$(brew --prefix)/bin/bash" /usr/bin/ # docker-cache specifically uses /usr/bin/bash
       - name: Cache Docker images.
-        uses: ScribeMD/docker-cache@0.5.0
+        uses: cozy-labs/docker-cache@0.6.0
         with:
           key: ${{ needs.docker_cache_key.outputs.key }}
       - name: Setup cozy-stack