MAINT: Bump @types/node from 25.9.3 to 26.0.0 in /frontend (#2077)

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Author: dependabot[bot]

frontend/package-lock.json

@@ -41,7 +41,7 @@
     "@testing-library/react": "16.3.2",
     "@testing-library/user-event": "14.6.1",
     "@types/jest": "30.0.0",
-    "@types/node": "25.9.3",
+    "@types/node": "26.0.0",
     "@types/react": "19.2.17",
     "@types/react-dom": "19.2.3",
     "@typescript-eslint/eslint-plugin": "8.62.0",