Update dependency express

Author: mend-for-github-com[bot]

cloud-translation/JavaScript/sms-translation/package.json

@@ -14,6 +14,6 @@
     "@google-cloud/translate": "^4.1.3",
     "body-parser": "1.18.3",
     "dotenv": "^6.2.0",
-    "express": "4.16.4"
+    "express": "4.21.0"
   }
 }

natural-language/JavaScript/sms-sentiment/package.json

@@ -14,6 +14,6 @@
     "@google-cloud/language": "^3.4.0",
     "body-parser": "1.18.3",
     "dotenv": "^6.2.0",
-    "express": "4.16.4"
+    "express": "4.21.1"
   }
 }