chore(deps): bump partysocket from 1.0.2 to 1.0.3

Bumps [partysocket](https://github.com/partykit/partykit/tree/HEAD/packages/partykit) from 1.0.2 to 1.0.3.
- [Release notes](https://github.com/partykit/partykit/releases)
- [Changelog](https://github.com/partykit/partykit/blob/main/packages/partykit/CHANGELOG.md)
- [Commits](https://github.com/partykit/partykit/commits/[email protected]/packages/partykit)

---
updated-dependencies:
- dependency-name: partysocket
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -19,7 +19,7 @@
     "@types/react-dom": "^18.3.1",
     "astro": "^5.1.1",
     "openai": "^4.76.3",
-    "partysocket": "1.0.2",
+    "partysocket": "1.0.3",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "react-toastify": "^11.0.2",