Bump typescript from 4.1.5 to 4.2.3 in /samples/web-extension/typescript (#109)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.1.5 to 4.2.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](microsoft/TypeScript@v4.1.5...v4.2.3)

Signed-off-by: dependabot[bot] <[email protected]>

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

Author: dependabot[bot]

samples/web-extension/typescript/package-lock.json

@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "ts-loader": "^8.0.17",
-    "typescript": "^4.1.5",
+    "typescript": "^4.2.3",
     "web-ext-types": "^3.2.1",
     "webpack": "^5.26.3",
     "webpack-cli": "^4.2.0"