Bump gatsby from 2.32.8 to 4.25.7

Bumps [gatsby](https://github.com/gatsbyjs/gatsby) from 2.32.8 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@2.32.8...gatsby@4.25.7)

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

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

package.json

@@ -15,7 +15,7 @@
     "babel-plugin-styled-components": "^1.12.0",
     "dotenv": "^8.2.0",
     "formik": "^2.2.9",
-    "gatsby": "^2.32.8",
+    "gatsby": "^4.25.7",
     "gatsby-cli": "^4.12.1",
     "gatsby-image": "^2.11.0",
     "gatsby-legacy-polyfills": "^2.12.1",