Bump diff from 8.0.4 to 9.0.0 (#746)

Author: dependabot[bot]

pdf-manager/package.json

@@ -24,7 +24,7 @@
     "@types/react": "^19.2.17",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^6.0.3",
-    "diff": "^8.0.4",
+    "diff": "^9.0.0",
     "picocolors": "^1.1.1",
     "tsx": "^4.23.0",
     "typescript": "^6.0.3",