Restore jest dependency

Author: mcafaro

package-lock.json

@@ -26,6 +26,7 @@
         "@actions/tool-cache": "^2.0.2"
     },
     "devDependencies": {
+        "@types/jest": "^30.0.0",
         "@types/node": "^24.3.0",
         "@typescript-eslint/eslint-plugin": "^8.40.0",
         "@typescript-eslint/parser": "^8.40.0",