fix(deps): update dependency express to v4.20.0 [security]

Author: renovate[bot]

with-express-react-email/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@react-email/render": "0.0.12",
-    "express": "4.18.3",
+    "express": "4.20.0",
     "resend": "3.2.0"
   },
   "devDependencies": {