chore(changelogs): update changelogs (#38580)

Co-authored-by: GatsbyJS Bot <[email protected]>

Author: gatsbybot

packages/gatsby-plugin-gatsby-cloud/CHANGELOG.md

@@ -3,6 +3,12 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+### [5.12.1](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-gatsby-cloud) (2023-09-15)
+
+#### Other Changes
+
+- Update gatsby-cloud-plugin README [#38479](https://github.com/gatsbyjs/gatsby/issues/38479) [#38550](https://github.com/gatsbyjs/gatsby/issues/38550) ([dfcc546](https://github.com/gatsbyjs/gatsby/commit/dfcc546ad3cdf8769925b7d3407c4be68158ca64))
+
 ## [5.12.0](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-gatsby-cloud) (2023-08-24)
 
 [🧾 Release notes](https://www.gatsbyjs.com/docs/reference/release-notes/v5.12)