Bump braces, @microsoft/sp-build-web and jest in /samples/react-my-teams

Bumps [braces](https://github.com/micromatch/braces) to 3.0.3 and updates ancestor dependencies [braces](https://github.com/micromatch/braces), [@microsoft/sp-build-web](http://aka.ms/spfx) and [jest](https://github.com/jestjs/jest/tree/HEAD/packages/jest). These dependencies need to be updated together.


Updates `braces` from 3.0.2 to 3.0.3
- [Changelog](https://github.com/micromatch/braces/blob/master/CHANGELOG.md)
- [Commits](micromatch/braces@3.0.2...3.0.3)

Updates `@microsoft/sp-build-web` from 1.18.0 to 1.20.1

Updates `jest` from 23.6.0 to 29.7.0
- [Release notes](https://github.com/jestjs/jest/releases)
- [Changelog](https://github.com/jestjs/jest/blob/main/CHANGELOG.md)
- [Commits](https://github.com/jestjs/jest/commits/v29.7.0/packages/jest)

---
updated-dependencies:
- dependency-name: braces
  dependency-type: indirect
- dependency-name: "@microsoft/sp-build-web"
  dependency-type: direct:development
- dependency-name: jest
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>