Free disk space when building in ci

.github/workflows/build.yml

@@ -79,6 +79,28 @@ jobs:
           mamba env update -n pyodide-env -f environment.yml
         if: steps.conda-cache.outputs.cache-hit != 'true'
 
+      # ref. https://github.com/apache/flink/blob/master/tools/azure-pipelines/free_disk_space.sh#L28-L53
+      - name: Free unused disk space
+        run: |
+          # delete packages
+          sudo apt-get remove -y '^dotnet-.*'
+          sudo apt-get remove -y '^llvm-.*'
+          sudo apt-get remove -y '^temurin-.*'
+          sudo apt-get remove -y '^mysql-server-core-.*'
+          sudo apt-get remove -y '^postgresql-.*'
+          sudo apt-get remove -y azure-cli google-chrome-stable google-cloud-cli firefox powershell microsoft-edge-stable mono-devel
+          sudo apt-get autoremove -y
+          sudo apt-get clean
+          
+          # delete directories
+          sudo rm -rf /usr/share/dotnet/
+          sudo rm -rf /usr/share/swift/
+          sudo rm -rf /usr/local/graalvm/
+          sudo rm -rf /usr/local/.ghcup/
+          sudo rm -rf /usr/local/share/powershell
+          sudo rm -rf /usr/local/share/chromium
+          sudo rm -rf /usr/local/lib/android
+
       - name: Install latest pyodide-build and build dependencies
         shell: bash -l {0}
         run : |