Add disk space cleanup step to prevent build failures

Author: abenso

.github/workflows/publishLedger.yml

@@ -21,6 +21,13 @@ jobs:
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
+      - name: Free disk space
+        run: |
+          sudo rm -rf /usr/share/dotnet
+          sudo rm -rf /usr/local/lib/android
+          sudo rm -rf /opt/ghc
+          sudo rm -rf /opt/hostedtoolcache/CodeQL
+          docker system prune -af
       - name: Login to Docker Hub
         uses: docker/login-action@v2
         with: