Bump gatsby from 5.8.0 to 5.9.1

Bumps [gatsby](https://github.com/gatsbyjs/gatsby) from 5.8.0 to 5.9.1.
- [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]@5.9.1)

---
updated-dependencies:
- dependency-name: gatsby
  dependency-type: direct:development
...

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

package.json

@@ -14,7 +14,7 @@
     "dotenv": "16.0.3",
     "eslint": "^8.56.0",
     "eslint-plugin-react": "^7.33.2",
-    "gatsby": "5.8.0",
+    "gatsby": "5.9.1",
     "gatsby-plugin-react-helmet": "6.8.0",
     "react": "18.2.0",
     "react-dom": "18.2.0",