fix: upgrade tslib from 2.6.3 to 2.8.1

Snyk has created this PR to upgrade tslib from 2.6.3 to 2.8.1.

See this package in npm:
tslib

See this project in Snyk:
https://app.snyk.io/org/contentstack-devex/project/288f9035-f981-4b3a-b17f-3b7d9072e133?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -20,7 +20,7 @@
     "node-graphviz": "^0.1.1",
     "table": "^6.8.1",
     "tmp": "^0.2.2",
-    "tslib": "^2.6.2",
+    "tslib": "^2.8.1",
     "url-join": "^4.0.1"
   },
   "devDependencies": {