Bump node-fetch, @material-ui/core, @material-ui/icons and react-rout…

…er-dom

Removes [node-fetch](https://github.com/node-fetch/node-fetch). It's no longer used after updating ancestor dependencies [node-fetch](https://github.com/node-fetch/node-fetch), [@material-ui/core](https://github.com/mui-org/material-ui/tree/HEAD/packages/material-ui), [@material-ui/icons](https://github.com/mui-org/material-ui/tree/HEAD/packages/material-ui-icons) and [react-router-dom](https://github.com/remix-run/react-router/tree/HEAD/packages/react-router-dom). These dependencies need to be updated together.


Removes `node-fetch`

Updates `@material-ui/core` from 3.9.2 to 4.12.4
- [Release notes](https://github.com/mui-org/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/v4.12.4/CHANGELOG.md)
- [Commits](https://github.com/mui-org/material-ui/commits/v4.12.4/packages/material-ui)

Updates `@material-ui/icons` from 3.0.2 to 4.11.3
- [Release notes](https://github.com/mui-org/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/v4.11.3/CHANGELOG.md)
- [Commits](https://github.com/mui-org/material-ui/commits/v4.11.3/packages/material-ui-icons)

Updates `react-router-dom` from 5.0.0 to 5.3.4
- [Release notes](https://github.com/remix-run/react-router/releases)
- [Changelog](https://github.com/remix-run/react-router/blob/main/CHANGELOG.md)
- [Commits](https://github.com/remix-run/react-router/commits/v5.3.4/packages/react-router-dom)

---
updated-dependencies:
- dependency-name: node-fetch
  dependency-type: indirect
- dependency-name: "@material-ui/core"
  dependency-type: direct:production
- dependency-name: "@material-ui/icons"
  dependency-type: direct:production
- dependency-name: react-router-dom
  dependency-type: direct:production
...

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