try using different arg syntax for jq

dist/steps/run_tests.sh

@@ -61,7 +61,7 @@ if [ "$PACKAGE_MODE" = "true" ]; then
     jq \
     --arg packageName "$PACKAGE_NAME" \
     --arg projectPath "$UNITY_PROJECT_PATH" \
-    '.dependencies += {"$packageName": "file:$projectPath"} | . += {"testables": ["$packageName"]}' \
+    '.dependencies += {"$ARGS.packageName": "file:$ARGS.projectPath"} | . += {"testables": ["$ARGS.packageName"]}' \
     > "$PACKAGE_MANIFEST_PATH"
 
   cat "$PACKAGE_MANIFEST_PATH"