build(deps-dev): Bump tslib from 2.0.0 to 2.1.0

Bumps [tslib](https://github.com/Microsoft/tslib) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/Microsoft/tslib/releases)
- [Commits](microsoft/tslib@2.0.0...2.1.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -182,7 +182,7 @@
     "ts-jest": "^26.4.4",
     "ts-node": "^9.1.1",
     "tsickle": "^0.39.1",
-    "tslib": "^2.0.0",
+    "tslib": "^2.1.0",
     "tslint": "~6.1.3",
     "tslint-config-prettier": "^1.18.0",
     "tslint-plugin-prettier": "^2.3.0",