Bump gatsby-plugin-mdx from 1.2.6 to 1.2.9

Bumps [gatsby-plugin-mdx](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-mdx) from 1.2.6 to 1.2.9.
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-mdx/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-mdx)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

packages/www/package.json

@@ -15,7 +15,7 @@
     "babel-plugin-styled-components": "^1.10.7",
     "gatsby": "^2.22.0",
     "gatsby-plugin-manifest": "^2.4.6",
-    "gatsby-plugin-mdx": "^1.2.6",
+    "gatsby-plugin-mdx": "^1.2.9",
     "gatsby-plugin-react-helmet": "^3.3.1",
     "gatsby-plugin-styled-components": "^3.3.1",
     "gatsby-plugin-tsconfig-paths": "^1.0.2",

yarn.lock

@@ -8266,7 +8266,7 @@ gatsby-cli@^2.12.26:
     ink "^2.7.1"
     ink-spinner "^3.0.1"
 
-gatsby-core-utils@^1.2.1, gatsby-core-utils@^1.3.0:
+gatsby-core-utils@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.3.0.tgz#a3dfc85f705c23e0b19a8cf9ccb97580eb0e2612"
   integrity sha512-7rgNCsqvChp00rL2rJrYNqXf47qP1G0K9Pm6iWuIYrZAdzT0q6rB9csNS5dZ8gzY9CnLT4cTcHVYbr5BjuT/Rg==
@@ -8318,10 +8318,10 @@ gatsby-plugin-manifest@^2.4.6:
     semver "^5.7.1"
     sharp "^0.25.1"
 
-gatsby-plugin-mdx@^1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-mdx/-/gatsby-plugin-mdx-1.2.6.tgz#f97d2131287ca1272ac8aa4eded81c884ebfb439"
-  integrity sha512-eXekmfycok8ljzTs3t2/WHtGlo7218ZhlxVjV4tRoQ/tTKSa/gnhqUIjCkiU6GiU7SpQWrX/z3aTAeTRseLoFw==
+gatsby-plugin-mdx@^1.2.9:
+  version "1.2.9"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-mdx/-/gatsby-plugin-mdx-1.2.9.tgz#ea7868fc766c762e54c7edabe9130257d26ee3c0"
+  integrity sha512-xZYvXHeRGZ9vOs6b0WAqQMqNbVlf8Ix7e76hxLqTdVl8O8LS/EC37sETvsugSYB8VtzXmj/eVTrVcfHTaD+ZZw==
   dependencies:
     "@babel/core" "^7.9.6"
     "@babel/generator" "^7.9.6"
@@ -8338,7 +8338,7 @@ gatsby-plugin-mdx@^1.2.6:
     escape-string-regexp "^1.0.5"
     eval "^0.1.4"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.2.1"
+    gatsby-core-utils "^1.3.0"
     gray-matter "^4.0.2"
     json5 "^2.1.3"
     loader-utils "^1.4.0"
@@ -11242,7 +11242,7 @@ json3@^3.3.2:
   resolved "https://registry.yarnpkg.com/json3/-/json3-3.3.3.tgz#7fc10e375fc5ae42c4705a5cc0aa6f62be305b81"
   integrity sha512-c7/8mbUsKigAbLkD5B010BK4D9LZm7A1pNItkEwiUZRpIN66exu/e7YQWysGun+TRKaJp8MhemM+VkfWv42aCA==
 
-[email protected], json5@^2.1.3:
+[email protected], json5@^2.1.2, json5@^2.1.3:
   version "2.1.3"
   resolved "https://registry.yarnpkg.com/json5/-/json5-2.1.3.tgz#c9b0f7fa9233bfe5807fe66fcf3a5617ed597d43"
   integrity sha512-KXPvOm8K9IJKFM0bmdn8QXh7udDh1g/giieX0NLCaMnb4hEiVFqnop2ImTXCc5e0/oHz3LTqmHGtExn5hfMkOA==
@@ -11256,13 +11256,6 @@ json5@^1.0.1:
   dependencies:
     minimist "^1.2.0"
 
-json5@^2.1.2:
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/json5/-/json5-2.1.2.tgz#43ef1f0af9835dd624751a6b7fa48874fb2d608e"
-  integrity sha512-MoUOQ4WdiN3yxhm7NEVJSJrieAo5hNSLQ5sj05OTRHPL9HOBy8u4Bu88jsC1jvqAdN+E1bJmsUcZH+1HQxliqQ==
-  dependencies:
-    minimist "^1.2.5"
-
 jsonfile@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"