fix(deps): update react monorepo to v19

Author: renovate[bot]

package.json

@@ -76,8 +76,8 @@
     "popper.js": "^1",
     "prop-types": "^15",
     "raw-loader": "^0.5",
-    "react": "^16",
-    "react-dom": "^16",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "react-focus-lock": "^1",
     "react-redux": "^5",
     "react-router-dom": "^5",
@@ -117,7 +117,7 @@
     "karma-spec-reporter": "^0.0",
     "karma-webpack": "^5",
     "plato": "^1",
-    "react-test-renderer": "^16",
+    "react-test-renderer": "^19.0.0",
     "selenium-webdriver": "^4",
     "sinon": "^19",
     "squirejs": "^0.1",