Bump react-is from 17.0.2 to 19.0.0

Bumps [react-is](https://github.com/facebook/react/tree/HEAD/packages/react-is) from 17.0.2 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-is)

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

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

package.json

@@ -66,7 +66,7 @@
     "rate-limit-redis": "^2.1.0",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
-    "react-is": "^17.0.2",
+    "react-is": "^19.0.0",
     "react-markdown": "^7.0.1",
     "react-syntax-highlighter": "^15.4.4",
     "redis": "^3.1.2",