fix(deps): update gatsby monorepo

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
gatsby (changelog)	dependencies	patch	2.24.84 -> 2.24.85
gatsby-plugin-netlify	dependencies	patch	2.3.23 -> 2.3.24
gatsby-plugin-offline	dependencies	patch	3.2.36 -> 3.2.37
gatsby-plugin-sass	dependencies	patch	2.3.20 -> 2.3.21
gatsby-remark-images	dependencies	patch	3.3.38 -> 3.3.39
gatsby-transformer-remark	dependencies	patch	2.8.45 -> 2.8.46

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Release Notes

gatsbyjs/gatsby

### [`v2.24.85`](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.24.84...gatsby@2.24.85) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.24.84...gatsby@2.24.85)

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