Bump gatsby from 2.32.11 to 3.0.4

Bumps [gatsby](https://github.com/gatsbyjs/gatsby) from 2.32.11 to 3.0.4.
- [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@2.32.11...gatsby@3.0.4)

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

package.json

@@ -37,7 +37,7 @@
   "dependencies": {
     "animejs": "^3.1.0",
     "babel-plugin-styled-components": "^1.10.6",
-    "gatsby": "^2.18.7",
+    "gatsby": "^3.0.4",
     "gatsby-image": "^3.0.0",
     "gatsby-plugin-dark-mode": "^1.1.0",
     "gatsby-plugin-google-analytics": "^2.1.29",