fix(deps): update dependency tslib to v2.6.3

Author: renovate[bot]

package.json

@@ -45,7 +45,7 @@
     "renamer": "2.0.1",
     "rxjs": "6.6.2",
     "schematics-utilities": "2.0.2",
-    "tslib": "2.0.0",
+    "tslib": "2.6.3",
     "zone.js": "0.10.3"
   },
   "devDependencies": {