Update dependency gatsby to v3.12.1

Author: renovate-bot

package.json

@@ -17,7 +17,7 @@
     "assert": "2.0.0",
     "codemirror": "5.62.3",
     "codemirror-graphql": "1.0.2",
-    "gatsby": "3.12.0",
+    "gatsby": "3.12.1",
     "gatsby-plugin-anchor-links": "1.2.1",
     "gatsby-plugin-feed": "3.12.0",
     "gatsby-plugin-google-analytics": "3.12.0",

yarn.lock

@@ -5643,10 +5643,10 @@ gatsby-worker@^0.3.0:
   dependencies:
     "@babel/core" "^7.14.8"
 
-gatsby@3.12.0:
-  version "3.12.0"
-  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-3.12.0.tgz#f6e39716b8d9412353be9d2fa880f19dd5f03216"
-  integrity sha512-H0F2ZNLuYZAg2TyHSjvsKlYfLo9bNUoMha3W4csLeAsI8okP3HV9m0J8FXVMrK4CdGc1RXqQzNu+2HdUpdMZZQ==
+gatsby@3.12.1:
+  version "3.12.1"
+  resolved "https://registry.yarnpkg.com/gatsby/-/gatsby-3.12.1.tgz#89899c2966df6a51228f39a099f68aab2baabc1a"
+  integrity sha512-Z2lh2EB8Oh68JHImnlHpqgivAKQ81CYNA9faMgQM/okvF0n5Zrb8/1cKb1VuEwwbjhwZjLAlCQAIZ79vs7IHDg==
   dependencies:
     "@babel/code-frame" "^7.14.0"
     "@babel/core" "^7.14.8"