Update dependency gatsby to v4.25.7 [SECURITY]

Author: renovate[bot]

package.json

@@ -41,7 +41,7 @@
     "@tryghost/helpers": "1.1.80",
     "@tryghost/helpers-gatsby": "2.0.11",
     "cheerio": "1.0.0-rc.11",
-    "gatsby": "4.15.2",
+    "gatsby": "4.25.7",
     "gatsby-awesome-pagination": "0.3.8",
     "gatsby-plugin-advanced-sitemap": "2.1.0",
     "gatsby-plugin-catch-links": "4.15.0",