Update gatsby monorepo

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
gatsby (changelog)	dependencies	patch	2.24.2 -> 2.24.4
gatsby-plugin-offline	dependencies	patch	3.2.17 -> 3.2.18
gatsby-source-filesystem	dependencies	patch	2.3.19 -> 2.3.20

---

Release Notes

gatsbyjs/gatsby

### [`v2.24.4`](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.24.3...gatsby@2.24.4) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.24.3...gatsby@2.24.4) ### [`v2.24.3`](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.24.2...gatsby@2.24.3) [Compare Source](https://togithub.com/gatsbyjs/gatsby/compare/gatsby@2.24.2...gatsby@2.24.3)

---

Renovate configuration

:date: Schedule: "before 3am on Monday" (UTC).

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:ghost: Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by WhiteSource Renovate. View repository job log here.