Bump gatsby from 2.23.20 to 4.25.7

Bumps [gatsby](https://github.com/gatsbyjs/gatsby) from 2.23.20 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@2.23.20...gatsby@4.25.7)

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

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

package.json

@@ -5,7 +5,7 @@
   "version": "0.1.0",
   "author": "Kyle Mathews <mathews.kyle@gmail.com>",
   "dependencies": {
-    "gatsby": "^2.21.0",
+    "gatsby": "^4.25.7",
     "gatsby-image": "^2.4.0",
     "gatsby-plugin-manifest": "^2.4.0",
     "gatsby-plugin-offline": "^3.2.0",