chore(deps-dev): bump gatsby from 4.6.2 to 4.7.2

Bumps [gatsby](https://github.com/gatsbyjs/gatsby) from 4.6.2 to 4.7.2.
- [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/gatsby@4.6.2...gatsby@4.7.2)

---
updated-dependencies:
- dependency-name: gatsby
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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