Update copy and zip to be stricter and rely on cd

.forgejo/workflows/wordpress-plugin.yml

@@ -47,10 +47,12 @@ jobs:
           # Create a build directory to ensure that we're correctly creating
           # a single child directory in the zip.
           mkdir -p build
-          cp -r ${SOURCE_DIR}/* "build/${PLUGIN_NAME}"
+          cp -r ${SOURCE_DIR} "build/${PLUGIN_NAME}"
 
           # Zip it up for shipping
-          zip -r "${PLUGIN_NAME}.zip" "build/${PLUGIN_NAME}"
+          cd build
+          zip -r "../${PLUGIN_NAME}.zip" "${PLUGIN_NAME}"
+          cd -
 
       - name: Create Release if not exists
         run: |