Bump cross-spawn, gatsby, gatsby-plugin-react-helmet, gatsby-plugin-s…

…tyled-components, gatsby-source-filesystem and gatsby-transformer-remark

Bumps [cross-spawn](https://github.com/moxystudio/node-cross-spawn) to 7.0.5 and updates ancestor dependencies [cross-spawn](https://github.com/moxystudio/node-cross-spawn), [gatsby](https://github.com/gatsbyjs/gatsby), [gatsby-plugin-react-helmet](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-react-helmet), [gatsby-plugin-styled-components](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-styled-components), [gatsby-source-filesystem](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-source-filesystem) and [gatsby-transformer-remark](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-transformer-remark). These dependencies need to be updated together.


Updates `cross-spawn` from 7.0.3 to 7.0.5
- [Changelog](https://github.com/moxystudio/node-cross-spawn/blob/master/CHANGELOG.md)
- [Commits](moxystudio/node-cross-spawn@v7.0.3...v7.0.5)

Updates `gatsby` from 3.15.0 to 5.14.0
- [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]@5.14.0)

Updates `gatsby-plugin-react-helmet` from 4.10.0 to 6.14.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-react-helmet/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-react-helmet)

Updates `gatsby-plugin-styled-components` from 4.12.0 to 6.14.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-styled-components/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-styled-components)

Updates `gatsby-source-filesystem` from 3.10.0 to 5.14.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-source-filesystem/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-source-filesystem)

Updates `gatsby-transformer-remark` from 4.7.0 to 6.14.0
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-transformer-remark/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-transformer-remark)

---
updated-dependencies:
- dependency-name: cross-spawn
  dependency-type: indirect
- dependency-name: gatsby
  dependency-type: direct:production
- dependency-name: gatsby-plugin-react-helmet
  dependency-type: direct:production
- dependency-name: gatsby-plugin-styled-components
  dependency-type: direct:production
- dependency-name: gatsby-source-filesystem
  dependency-type: direct:production
- dependency-name: gatsby-transformer-remark
  dependency-type: direct:production
...

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