chore(deps): update commitlint monorepo to v20

Author: renovate[bot]

package.json

@@ -31,8 +31,8 @@
     "tailwindcss": "^4.1.4"
   },
   "devDependencies": {
-    "@commitlint/cli": "^19.0.0",
-    "@commitlint/config-conventional": "^19.0.0",
+    "@commitlint/cli": "^20.0.0",
+    "@commitlint/config-conventional": "^20.0.0",
     "@eslint/js": "^9.25.1",
     "@fontsource/ibm-plex-mono": "^5.0.8",
     "@iconify-json/bi": "^1.1.20",