fix: force graceful-js to 4.2.6 to stop some zipping issues

Author: nolde

package.json

@@ -15,7 +15,7 @@
     "filesize": "^3.6.1",
     "fs-extra": "^8.1.0",
     "globby": "^9.2.0",
-    "graceful-fs": "^4.2.6",
+    "graceful-fs": "4.2.6",
     "lodash": "^4.17.21",
     "semver": "^6.3.0"
   },