Update React and React-dom version to RC1

[eXistenZNL]

What

Updated React and React DOM deps that depend on RC.1 rather than a specific build.

Why

Freshly cloning this project and and installing the dependencies did no longer work.
I tested this with both Node 18 (NPM 9.8.1) and Node 22 (NPM 10.9.0).

This is the output in such case:

npm error code ERESOLVE
npm error ERESOLVE could not resolve
npm error
npm error While resolving: [email protected]
npm error Found: [email protected]
npm error node_modules/react
npm error   react@"19.0.0-rc-02c0e824-20241028" from the root project
npm error   peer react@"19.0.0-rc-02c0e824-20241028" from [email protected]
npm error   node_modules/react-dom
npm error     react-dom@"19.0.0-rc-02c0e824-20241028" from the root project
npm error   1 more (styled-jsx)
npm error
npm error Could not resolve dependency:
npm error peer react@">= 0.14.0" from [email protected]
npm error node_modules/markdown-to-jsx
npm error   dev markdown-to-jsx@"^7.7.0" from the root project
npm error
npm error Conflicting peer dependency: [email protected]
npm error node_modules/react
npm error   peer react@">= 0.14.0" from [email protected]
npm error   node_modules/markdown-to-jsx
npm error     dev markdown-to-jsx@"^7.7.0" from the root project
npm error
npm error Fix the upstream dependency conflict, or retry
npm error this command with --force or --legacy-peer-deps
npm error to accept an incorrect (and potentially broken) dependency resolution.

[rick-nu]

Nice that this package is available now! 👌