Bump typescript from 4.1.5 to 4.2.2 (#4312)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.1.5 to 4.2.2.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/commits)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -122,7 +122,7 @@
     "toxiproxy-node-client": "^2.0.6",
     "ts-node": "^9.1.1",
     "tsd": "^0.14.0",
-    "typescript": "4.1.5"
+    "typescript": "4.2.2"
   },
   "buildDependencies": [
     "rimraf"