fix(deps): update dependency gatsby-plugin-sharp to v4 [security]

Author: renovate[bot]

gatsby/package.json

@@ -15,7 +15,7 @@
     "gatsby-plugin-offline": "4.9.0",
     "gatsby-plugin-postcss": "4.9.0",
     "gatsby-plugin-react-helmet": "4.9.0",
-    "gatsby-plugin-sharp": "3.9.0",
+    "gatsby-plugin-sharp": "4.25.1",
     "gatsby-source-filesystem": "3.9.0",
     "gatsby-transformer-sharp": "3.9.0",
     "postcss": "^8.2.8",