chore(deps): bump gatsby from 2.32.11 to 4.25.7

Bumps [gatsby](https://github.com/gatsbyjs/gatsby) from 2.32.11 to 4.25.7.
- [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@4.25.7)

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

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

package.json

@@ -12,7 +12,7 @@
   },
   "dependencies": {
     "@marscollective/gatsby-theme-link-free": "^0.2.7",
-    "gatsby": "2.32.11",
+    "gatsby": "4.25.7",
     "react": "17.0.2",
     "react-dom": "17.0.2"
   },