Update core module for Windows compatibility. :-|

Author: jdillick

package.json

@@ -57,7 +57,7 @@
     "@atomic-reactor/reactium-user": "5.0.1",
     "@atomic-reactor/reactium-setting": "5.0.1",
     "@atomic-reactor/reactium-svg": "0.0.3",
-    "@atomic-reactor/reactium-core": "5.0.20"
+    "@atomic-reactor/reactium-core": "5.0.21"
   },
   "workspaces": [
     "reactium_modules/*",