Bump semver-regex, gatsby-plugin-sharp and husky

Bumps [semver-regex](https://github.com/sindresorhus/semver-regex), [gatsby-plugin-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sharp) and [husky](https://github.com/typicode/husky). These dependencies needed to be updated together.

Updates `semver-regex` from 2.0.0 to 3.1.4
- [Release notes](https://github.com/sindresorhus/semver-regex/releases)
- [Commits](sindresorhus/semver-regex@v2.0.0...v3.1.4)

Updates `gatsby-plugin-sharp` from 2.6.24 to 4.20.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-sharp@4.20.0/packages/gatsby-plugin-sharp)

Updates `husky` from 4.2.5 to 4.3.8
- [Release notes](https://github.com/typicode/husky/releases)
- [Commits](typicode/husky@v4.2.5...v4.3.8)

---
updated-dependencies:
- dependency-name: semver-regex
  dependency-type: indirect
- dependency-name: gatsby-plugin-sharp
  dependency-type: direct:production
- dependency-name: husky
  dependency-type: direct:development
...

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Author: dependabot[bot]