fix(deps): update gatsby to v2.3.31

Author: renovate-bot

package.json

@@ -44,7 +44,7 @@
     "@wkovacs64/normalize.css": "8.0.1",
     "axios": "0.18.0",
     "dotenv": "7.0.0",
-    "gatsby": "2.3.30",
+    "gatsby": "2.3.31",
     "gatsby-plugin-emotion": "4.0.6",
     "gatsby-plugin-manifest": "2.0.29",
     "gatsby-plugin-netlify": "2.0.15",

yarn.lock

@@ -6613,10 +6613,10 @@ gatsby-telemetry@^1.0.9:
     stack-utils "1.0.2"
     uuid "3.3.2"
 
-[email protected].30:
-  version "2.3.30"
-  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.3.30.tgz#758d13a10f396eb75d480250cb911e75fd40fe5a"
-  integrity sha512-66ZPcbyFhrPa1pJVfG3Xz6z+lJ8IjMxajoFA6yb8aEBKIjw1IN10D25bnUB79XppydNp+3C4EadGMXVWcFFUhg==
+[email protected].31:
+  version "2.3.31"
+  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-2.3.31.tgz#9ec87eea5ac02e74e96748aabffea9c268a45382"
+  integrity sha512-kUkwhkDgPYJX+huwue6kpW8eaERFN6lL8Cym/POeNSqC7O+oUFtxS30Xg1L2JDax8WYVaGP9Wq427Zd7/u9SOQ==
   dependencies:
     "@babel/code-frame" "^7.0.0"
     "@babel/core" "^7.0.0"