fix(deps): add dotenv dependency for environment variable management

Author: ErwanDecoster

package-lock.json

@@ -76,6 +76,7 @@
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
     "@vitejs/plugin-react": "^5.1.1",
+    "dotenv": "^17.2.3",
     "eslint": "^9.39.1",
     "eslint-plugin-react-hooks": "^7.0.1",
     "eslint-plugin-react-refresh": "^0.4.24",