Update dependency tslib to v2.1.0

Author: renovate-bot

package-lock.json

@@ -117,7 +117,7 @@
     "pretty-quick": "3.1.0",
     "ts-jest": "26.4.4",
     "ts-node": "9.1.1",
-    "tslib": "2.0.3",
+    "tslib": "2.1.0",
     "typescript": "4.1.3",
     "utf-8-validate": "5.0.4",
     "ws": "7.4.1"