fix: package.json & package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-DIFF-14917201

Author: snyk-bot

package-lock.json

@@ -14,7 +14,7 @@
     "@types/tmp": "^0.2.6",
     "axios": "^1.13.2",
     "cli-ux": "^6.0.9",
-    "diff2html": "^3.4.52",
+    "diff2html": "^3.4.56",
     "git-diff": "^2.0.6",
     "moment": "^2.30.1",
     "node-graphviz": "^0.1.1",