chore: bump shelljs-release for node 14 compat

This bumps shelljs-release to v0.4.1, which is node 14 compatible.

Author: nfischer

package.json

@@ -44,7 +44,7 @@
     "mocha": "^6.1.4",
     "nyc": "^14.1.1",
     "shelljs-changelog": "^0.2.0",
-    "shelljs-release": "^0.4.0",
+    "shelljs-release": "^0.4.1",
     "should": "^13.2.3"
   }
 }