chore(deps): bump shelljs to ensure vuln fixed (#969)

Author: vinayakkulkarni

packages/shipjs-lib/package.json

@@ -49,6 +49,6 @@
     "dotenv": "^8.1.0",
     "parse-github-url": "1.0.2",
     "semver": "6.3.0",
-    "shelljs": "0.8.4"
+    "shelljs": "0.8.5"
   }
 }