Bump gts from 5.3.1 to 6.0.0

Bumps [gts](https://github.com/google/gts) from 5.3.1 to 6.0.0.
- [Release notes](https://github.com/google/gts/releases)
- [Changelog](https://github.com/google/gts/blob/main/CHANGELOG.md)
- [Commits](google/gts@v5.3.1...v6.0.0)

---
updated-dependencies:
- dependency-name: gts
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -39,7 +39,7 @@
   "devDependencies": {
     "@types/node": "^22.7.5",
     "@vercel/ncc": "^0.38.2",
-    "gts": "^5.3.1",
+    "gts": "^6.0.0",
     "typescript": "^5.6.3"
   }
 }