[Snyk] Upgrade: gatsby, gatsby-image, gatsby-plugin-catch-links, gatsby-plugin-manifest, gatsby-plugin-no-sourcemaps, gatsby-plugin-offline, gatsby-plugin-react-helmet, gatsby-plugin-sharp, gatsby-plugin-styled-components, gatsby-remark-autolink-headers, gatsby-remark-prismjs, gatsby-source-filesystem, gatsby-transformer-remark - #7