re-enable cpm cache

Author: cgytrus

action.yml

@@ -165,8 +165,8 @@ runs:
         geode sdk update $SDK_VERSION
         geode sdk install-binaries --platform ${{ steps.platform.outputs.target_id }}
 
-        #export CPM_CACHE="${{ github.action_path }}/cpm-cache"
-        #echo "CPM_SOURCE_CACHE=$CPM_CACHE" >> $GITHUB_ENV
+        export CPM_CACHE="${{ github.action_path }}/cpm-cache"
+        echo "CPM_SOURCE_CACHE=$CPM_CACHE" >> $GITHUB_ENV
 
 
     - name: Run CMake and build