chore(deps): upgrade dependency typescript to v6

Author: renovate[bot]

package-lock.json

@@ -21,7 +21,7 @@
   "devDependencies": {
     "@octokit/types": "16.0.0",
     "@types/node": "24.12.2",
-    "typescript": "5.9.3"
+    "typescript": "6.0.2"
   },
   "dependencies": {
     "@actions/artifact": "6.2.1",