Update dependency diff to v9 (#168)

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

Author: renovate[bot]

package-lock.json

@@ -55,7 +55,7 @@
   "overrides": {
     "@babel/core": "^7.29.6",
     "brace-expansion": "^5.0.6",
-    "diff": "^8.0.3",
+    "diff": "^9.0.0",
     "js-yaml": "^4.2.0",
     "serialize-javascript": "^7.0.5",
     "uuid": "^11.1.1"