Bump gatsby-plugin-mdx from 1.0.70 to 1.0.71

Bumps [gatsby-plugin-mdx](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-mdx) from 1.0.70 to 1.0.71.
- [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

@@ -14,7 +14,7 @@
     "gatsby-image": "^2.2.40",
     "gatsby-plugin-eslint": "^2.0.8",
     "gatsby-plugin-manifest": "^2.2.41",
-    "gatsby-plugin-mdx": "^1.0.70",
+    "gatsby-plugin-mdx": "^1.0.71",
     "gatsby-plugin-offline": "^3.0.33",
     "gatsby-plugin-react-helmet": "^3.1.22",
     "gatsby-plugin-sharp": "^2.4.5",

yarn.lock

@@ -8592,10 +8592,10 @@ gatsby-plugin-manifest@^2.2.41:
     semver "^5.7.1"
     sharp "^0.23.4"
 
-gatsby-plugin-mdx@^1.0.70:
-  version "1.0.70"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-mdx/-/gatsby-plugin-mdx-1.0.70.tgz#97613bf6888a74b425d1a8e8b6cb21250c50bc07"
-  integrity sha512-nHZHcZgrO17KpcwjKJs1E9DaAyg0Qy4hCugTIuOAGKNZfYKNfwf5n5LZoxK5/VUXpFqM/Zfm3ubKVmXFGw5ZPw==
+gatsby-plugin-mdx@^1.0.71:
+  version "1.0.71"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-mdx/-/gatsby-plugin-mdx-1.0.71.tgz#1c302b1b55fd3e2add45edd7cef1b5150ec0ffe3"
+  integrity sha512-1JX8XpzlXucQAwE8FpnfYfjnNrWTkj5aOYqkizdfu2R129P8o8dB+v4EWbqMhfXO7Ol0bBjUUpuK20MSGF/ZEg==
   dependencies:
     "@babel/core" "^7.7.5"
     "@babel/generator" "^7.7.4"