Update gatsby monorepo

Author: renovate-bot

package.json

@@ -8,30 +8,30 @@
     "@fortawesome/free-brands-svg-icons": "5.15.3",
     "@fortawesome/react-fontawesome": "0.1.14",
     "font-awesome": "4.7.0",
-    "gatsby": "3.2.1",
-    "gatsby-image": "3.2.0",
-    "gatsby-link": "3.2.0",
-    "gatsby-plugin-catch-links": "3.2.0",
-    "gatsby-plugin-feed": "3.2.0",
-    "gatsby-plugin-google-analytics": "3.2.0",
-    "gatsby-plugin-manifest": "3.2.0",
-    "gatsby-plugin-netlify": "3.2.0",
-    "gatsby-plugin-nprogress": "3.2.0",
-    "gatsby-plugin-offline": "4.2.0",
-    "gatsby-plugin-react-helmet": "4.2.0",
-    "gatsby-plugin-sharp": "3.2.0",
-    "gatsby-plugin-sitemap": "3.2.0",
-    "gatsby-plugin-styled-components": "4.2.0",
-    "gatsby-plugin-twitter": "3.2.0",
+    "gatsby": "3.4.0",
+    "gatsby-image": "3.4.0",
+    "gatsby-link": "3.4.0",
+    "gatsby-plugin-catch-links": "3.4.0",
+    "gatsby-plugin-feed": "3.4.0",
+    "gatsby-plugin-google-analytics": "3.4.0",
+    "gatsby-plugin-manifest": "3.4.0",
+    "gatsby-plugin-netlify": "3.4.0",
+    "gatsby-plugin-nprogress": "3.4.0",
+    "gatsby-plugin-offline": "4.4.0",
+    "gatsby-plugin-react-helmet": "4.4.0",
+    "gatsby-plugin-sharp": "3.4.0",
+    "gatsby-plugin-sitemap": "3.3.0",
+    "gatsby-plugin-styled-components": "4.4.0",
+    "gatsby-plugin-twitter": "3.4.0",
     "gatsby-plugin-typegen": "^2.2.4",
     "gatsby-remark-copy-linked-files": "3.2.0",
     "gatsby-remark-images": "4.2.0",
     "gatsby-remark-prismjs": "4.2.0",
     "gatsby-remark-responsive-iframe": "3.2.0",
     "gatsby-remark-smartypants": "3.2.0",
-    "gatsby-source-filesystem": "3.2.0",
+    "gatsby-source-filesystem": "3.4.0",
     "gatsby-transformer-remark": "3.2.0",
-    "gatsby-transformer-sharp": "3.2.0",
+    "gatsby-transformer-sharp": "3.4.0",
     "localforage": "1.9.0",
     "modern-normalize": "1.0.0",
     "prismjs": "1.23.0",