Bump react from 18.3.1 to 19.0.0

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) from 18.3.1 to 19.0.0.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits/v19.0.0/packages/react)

---
updated-dependencies:
- dependency-name: react
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -15,7 +15,7 @@
     "moment": "^2.29.4",
     "next": "^15.1.6",
     "next-seo": "^6.5.0",
-    "react": "^18.3.1",
+    "react": "^19.0.0",
     "react-accessible-accordion": "^5.0.0",
     "react-big-calendar": "^1.8.4",
     "react-countdown": "^2.3.5",