fix(deps): update react monorepo to v19

.github/workflows/validate.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v5
-    - uses: actions/setup-node@v6
+    - uses: actions/setup-node@v4
       with:
         node-version-file: '.nvmrc'
     - run: make validate.ci

package.json

@@ -58,8 +58,8 @@
     "postcss-loader": "^8.1.1",
     "prop-types": "15.8.1",
     "query-string": "^7.1.3",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "react-helmet": "6.1.0",
     "react-redux": "7.2.9",
     "react-router": "6.15.0",