fix(deps): update frontend dependencies

chatbot-ui/package.json

@@ -21,9 +21,9 @@
     "@testing-library/user-event": "^14.5.1",
     "classnames": "^2.3.2",
     "govuk-frontend": "^5.1.0",
-    "next": "14.0.4",
-    "react": "18.2.0",
-    "react-dom": "18.2.0",
+    "next": "15.1.0",
+    "react": "19.0.0",
+    "react-dom": "19.0.0",
     "react-hook-form": "^7.49.3",
     "react-markdown": "^9.0.0",
     "sass": "^1.68.0"
@@ -33,15 +33,15 @@
     "@swc/core": "^1.3.100",
     "@swc/jest": "^0.2.29",
     "@testing-library/jest-dom": "^6.1.4",
-    "@testing-library/react": "^14.1.1",
+    "@testing-library/react": "^16.0.0",
     "@types/jest": "^29.5.8",
-    "@types/node": "^20.7.1",
-    "@types/react": "^18.2.23",
-    "@types/react-dom": "^18.2.8",
-    "@typescript-eslint/eslint-plugin": "^6.7.3",
-    "@typescript-eslint/parser": "^6.7.3",
-    "eslint": "8.56.0",
-    "eslint-config-next": "14.0.4",
+    "@types/node": "^22.0.0",
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
+    "@typescript-eslint/eslint-plugin": "^8.0.0",
+    "@typescript-eslint/parser": "^8.0.0",
+    "eslint": "9.16.0",
+    "eslint-config-next": "15.1.0",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
     "jest-junit": "^16.0.0",