Update gatsby-source-filesystem requirement in /packages/www
Update gatsby-source-filesystem requirement in /packages/www

Updates the requirements on [gatsby-source-filesystem](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-source-filesystem) to permit the latest version.
- [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/gatsby-source-filesystem@2.1.40/packages/gatsby-source-filesystem)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
looker-open-source/components,looker-open-source/components,looker-open-source/components,looker-open-source/components