Upgrade React to v19 in spec/dummy

Author: alexeyr

spec/dummy/babel.config.js

@@ -10,6 +10,7 @@ module.exports = function (api) {
         '@babel/preset-react',
         {
           development: !isProductionEnv,
+          runtime: 'automatic',
           useBuiltIns: true,
         },
       ],

spec/dummy/package.json

@@ -37,11 +37,10 @@
     "nps": "^5.10.0",
     "null-loader": "^4.0.0",
     "prop-types": "^15.7.2",
-    "react": "^18.2.0",
-    "react-dom": "^18.2.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "react-helmet": "^6.1.0",
     "react-on-rails": "file:.yalc/react-on-rails",
-    "react-proptypes": "^1.0.0",
     "react-redux": "^8.0.2",
     "react-router-dom": "^5.2.0",
     "redux": "^4.0.1",
@@ -62,8 +61,8 @@
   },
   "devDependencies": {
     "@pmmmwh/react-refresh-webpack-plugin": "^0.5.1",
-    "@types/react": "^18.0.14",
-    "@types/react-dom": "^18.0.5",
+    "@types/react": "^19.0.0",
+    "@types/react-dom": "^19.0.0",
     "@types/react-helmet": "^6.1.5",
     "react-refresh": "^0.11.0",
     "webpack-dev-server": "^4.9.0"