Added helmet for added protection

package-lock.json

@@ -10,6 +10,7 @@
                 "cors": "^2.8.5",
                 "express": "^4.18.2",
                 "geojson-geometries-lookup": "^0.5.0",
+                "helmet": "^6.1.5",
                 "morgan": "^1.10.0"
             }
         },
@@ -436,6 +437,14 @@
                 "url": "https://github.com/sponsors/ljharb"
             }
         },
+        "node_modules/helmet": {
+            "version": "6.1.5",
+            "resolved": "https://registry.npmjs.org/helmet/-/helmet-6.1.5.tgz",
+            "integrity": "sha512-UgAvdoG0BhF9vcCh/j0bWtElo2ZHHk6OzC98NLCM6zK03DEVSM0vUAtT7iR+oTo2Mi6sGelAH3tL6B/uUWxV4g==",
+            "engines": {
+                "node": ">=14.0.0"
+            }
+        },
         "node_modules/http-errors": {
             "version": "2.0.0",
             "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-2.0.0.tgz",