Update gatsby monorepo

Author: renovate[bot]

package.json

@@ -11,13 +11,13 @@
   },
   "dependencies": {
     "gatsby": "^2.24.47",
-    "gatsby-image": "^2.4.14",
-    "gatsby-plugin-manifest": "^2.4.22",
-    "gatsby-plugin-offline": "^3.2.22",
-    "gatsby-plugin-react-helmet": "^3.3.10",
+    "gatsby-image": "^3.0.0",
+    "gatsby-plugin-manifest": "^5.0.0",
+    "gatsby-plugin-offline": "^6.0.0",
+    "gatsby-plugin-react-helmet": "^6.0.0",
     "gatsby-plugin-sharp": "^2.6.27",
-    "gatsby-source-filesystem": "^2.3.24",
-    "gatsby-transformer-sharp": "^2.5.12",
+    "gatsby-source-filesystem": "^5.0.0",
+    "gatsby-transformer-sharp": "^5.0.0",
     "prop-types": "^15.7.2",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",