Build(deps-dev): bump gatsby from 2.21.21 to 2.21.33 (#5097)

Bumps [gatsby](https://github.com/gatsbyjs/gatsby) from 2.21.21 to 2.21.33.
- [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@2.21.21...gatsby@2.21.33)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: repo-ranger[bot] <39074581+repo-ranger[bot]@users.noreply.github.com>

package.json

@@ -194,7 +194,7 @@
     "fetch-ponyfill": "^6.1.0",
     "form-data": "^3.0.0",
     "fs-readfile-promise": "^3.0.1",
-    "gatsby": "2.21.21",
+    "gatsby": "2.21.33",
     "gatsby-plugin-catch-links": "^2.3.1",
     "gatsby-plugin-page-creator": "^2.3.2",
     "gatsby-plugin-react-helmet": "^3.3.1",