Bump typescript from 4.1.5 to 4.2.3 in /samples/web-extension/javascript

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]>

Author: dependabot[bot]

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

@@ -14,7 +14,7 @@
     "webextension-polyfill": "^0.7.0"
   },
   "devDependencies": {
-    "typescript": "^4.1.5",
+    "typescript": "^4.2.3",
     "webpack": "^5.23.0",
     "webpack-cli": "^4.2.0"
   }