Updated dependencies

* Removed 'react-router-dom' as no longer needed

Linked to:

* news-server v1.7.4
* auth-server v1.8.10
* chat-server v1.5.4

package.json

@@ -1,6 +1,6 @@
 {
   "name": "mern-template",
-  "version": "1.5.1",
+  "version": "1.5.4",
   "description": "A website template using the MERN stack.",
   "main": "server/server.js",
   "scripts": {
@@ -41,7 +41,6 @@
     "react": "^19.1.1",
     "react-dom": "^19.1.1",
     "react-router": "^7.7.1",
-    "react-router-dom": "^7.9.1",
     "react-select": "^5.10.2",
     "sequelize": "^6.37.7",
     "socket.io-client": "^4.8.1",