chore(deps-dev): bump the gatsby group with 1 update

Bumps the gatsby group with 1 update: [gatsby](https://github.com/gatsbyjs/gatsby).

- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/compare/[email protected]@5.12.11)

---
updated-dependencies:
- dependency-name: gatsby
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: gatsby
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -49,7 +49,7 @@
     "eslint-plugin-mdx": "^2.2.0",
     "eslint-plugin-notice": "^0.9.10",
     "eslint-plugin-prettier": "^5.0.1",
-    "gatsby": "^5.12.9",
+    "gatsby": "^5.12.11",
     "gatsby-plugin-google-gtag": "^5.12.3",
     "gatsby-plugin-mailchimp": "^5.2.2",
     "gatsby-plugin-manifest": "^5.12.3",