Bump typescript from 5.8.3 to 5.9.3 in /streamlit_webrtc/frontend (#2226)

Bumps [typescript](https://github.com/microsoft/TypeScript) from 5.8.3 to 5.9.3.
- [Release notes](https://github.com/microsoft/TypeScript/releases)
- [Changelog](https://github.com/microsoft/TypeScript/blob/main/azure-pipelines.release-publish.yml)
- [Commits](microsoft/TypeScript@v5.8.3...v5.9.3)

---
updated-dependencies:
- dependency-name: typescript
  dependency-version: 5.9.3
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

streamlit_webrtc/frontend/package.json

@@ -44,7 +44,7 @@
     "jsdom": "^27.0.0",
     "npm-run-all2": "^8.0.4",
     "prettier": "^3.6.2",
-    "typescript": "^5.8.3",
+    "typescript": "^5.9.3",
     "typescript-eslint": "^8.45.0",
     "vite": "^7.1.8",
     "vitest": "^3.2.4"