fix(deps): update gatsby monorepo

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gatsby (changelog)	4.19.1 -> 4.19.2
gatsby-link	4.19.0 -> 4.19.1

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Release Notes

gatsbyjs/gatsby (gatsby)

### [`v4.19.2`](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@4.19.1...gatsby@4.19.2) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@4.19.1...gatsby@4.19.2)

gatsbyjs/gatsby (gatsby-link)

### [`v4.19.1`](https://togithub.com/gatsbyjs/gatsby/compare/gatsby-link@4.19.0...gatsby-link@4.19.1) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/gatsby-link@4.19.0...gatsby-link@4.19.1)

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