build(deps): bump shell-quote and gatsby in /docs/.awesome

Bumps [shell-quote](https://github.com/ljharb/shell-quote) to 1.8.0 and updates ancestor dependency [gatsby](https://github.com/gatsbyjs/gatsby). These dependencies need to be updated together.


Updates `shell-quote` from 1.6.1 to 1.8.0
- [Release notes](https://github.com/ljharb/shell-quote/releases)
- [Changelog](https://github.com/ljharb/shell-quote/blob/main/CHANGELOG.md)
- [Commits](ljharb/shell-quote@1.6.1...v1.8.0)

Updates `gatsby` from 2.23.20 to 5.8.1
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/compare/[email protected]@5.8.1)

---
updated-dependencies:
- dependency-name: shell-quote
  dependency-type: indirect
- dependency-name: gatsby
  dependency-type: direct:production
...

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

Author: dependabot[bot]