build(deps): bump gatsby from 2.32.3 to 2.32.8 in /docs (#1804)

Bumps [gatsby](https://github.com/gatsbyjs/gatsby) from 2.32.3 to 2.32.8.
- [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/gatsby@2.32.3...gatsby@2.32.8)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/package.json

@@ -11,7 +11,7 @@
     "@mdx-js/mdx": "^1.6.22",
     "@mdx-js/react": "^1.6.16",
     "emotion-theming": "^10.0.27",
-    "gatsby": "^2.32.3",
+    "gatsby": "^2.32.8",
     "gatsby-alias-imports": "^1.0.6",
     "gatsby-plugin-canonical-urls": "^2.10.0",
     "gatsby-plugin-catch-links": "^2.10.0",