Bump the npm_and_yarn group with 4 updates

Bumps the npm_and_yarn group with 4 updates: [braces](https://github.com/micromatch/braces), [webpack](https://github.com/webpack/webpack), [cross-spawn](https://github.com/moxystudio/node-cross-spawn) and [katex](https://github.com/KaTeX/KaTeX).


Updates `braces` from 2.3.2 to 3.0.3
- [Changelog](https://github.com/micromatch/braces/blob/master/CHANGELOG.md)
- [Commits](https://github.com/micromatch/braces/commits/3.0.3)

Updates `webpack` from 4.47.0 to 5.96.1
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v4.47.0...v5.96.1)

Updates `cross-spawn` from 7.0.3 to 7.0.6
- [Changelog](https://github.com/moxystudio/node-cross-spawn/blob/master/CHANGELOG.md)
- [Commits](moxystudio/node-cross-spawn@v7.0.3...v7.0.6)

Updates `katex` from 0.16.10 to 0.16.21
- [Release notes](https://github.com/KaTeX/KaTeX/releases)
- [Changelog](https://github.com/KaTeX/KaTeX/blob/main/CHANGELOG.md)
- [Commits](KaTeX/KaTeX@v0.16.10...v0.16.21)

---
updated-dependencies:
- dependency-name: braces
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: webpack
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: cross-spawn
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: katex
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

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

Author: dependabot[bot]