Bump webpack from 5.48.0 to 5.50.0 in /runner

Bumps [webpack](https://github.com/webpack/webpack) from 5.48.0 to 5.50.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.48.0...v5.50.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

runner/package.json

@@ -11,7 +11,7 @@
   "devDependencies": {
     "pkg": "^5.3.1",
     "ts-loader": "9.2.5",
-    "webpack": "^5.48.0",
+    "webpack": "^5.50.0",
     "webpack-cli": "^4.7.2"
   }
 }