chore(deps): update dependency typescript to ~5.9.0 (#1282)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -42,7 +42,7 @@
     "prettier": "^3.6.2",
     "prettier-plugin-svelte": "^3.4.0",
     "rimraf": "^6.0.1",
-    "typescript": "~5.8.3",
+    "typescript": "~5.9.0",
     "typescript-eslint": "^8.39.0",
     "undici": "^6.21.2"
   },