Bump gatsby-plugin-mdx from 1.0.67 to 1.0.70

Bumps [gatsby-plugin-mdx](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-mdx) from 1.0.67 to 1.0.70.
- [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]

yarn.lock

@@ -519,22 +519,14 @@
     "@babel/helper-plugin-utils" "^7.0.0"
     "@babel/plugin-syntax-object-rest-spread" "^7.2.0"
 
-"@babel/[email protected]":
+"@babel/[email protected]", "@babel/plugin-proposal-object-rest-spread@^7.5.5", "@babel/plugin-proposal-object-rest-spread@^7.6.2", "@babel/plugin-proposal-object-rest-spread@^7.7.4", "@babel/plugin-proposal-object-rest-spread@^7.7.7":
   version "7.8.0"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.8.0.tgz#ca8ac673d32db774c2154a4c7517fd46ec45e9cf"
   integrity sha512-SjJ2ZXCylpWC+5DTES0/pbpNmw/FnjU/3dF068xF0DU9aN+oOKah+3MCSFcb4pnZ9IwmxfOy4KnbGJSQR+hAZA==
   dependencies:
     "@babel/helper-plugin-utils" "^7.8.0"
     "@babel/plugin-syntax-object-rest-spread" "^7.8.0"
 
-"@babel/plugin-proposal-object-rest-spread@^7.5.5", "@babel/plugin-proposal-object-rest-spread@^7.6.2", "@babel/plugin-proposal-object-rest-spread@^7.7.4", "@babel/plugin-proposal-object-rest-spread@^7.7.7":
-  version "7.7.7"
-  resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.7.7.tgz#9f27075004ab99be08c5c1bd653a2985813cb370"
-  integrity sha512-3qp9I8lelgzNedI3hrhkvhaEYree6+WHnyA/q4Dza9z7iEIs1eyhWyJnetk3jJ69RT0AT4G0UhEGwyGFJ7GUuQ==
-  dependencies:
-    "@babel/helper-plugin-utils" "^7.0.0"
-    "@babel/plugin-syntax-object-rest-spread" "^7.7.4"
-
 "@babel/plugin-proposal-optional-catch-binding@^7.2.0", "@babel/plugin-proposal-optional-catch-binding@^7.7.4":
   version "7.7.4"
   resolved "https://registry.yarnpkg.com/@babel/plugin-proposal-optional-catch-binding/-/plugin-proposal-optional-catch-binding-7.7.4.tgz#ec21e8aeb09ec6711bc0a39ca49520abee1de379"
@@ -10691,10 +10683,10 @@ gatsby-cli@^2.8.19:
     ink "^2.6.0"
     ink-spinner "^3.0.1"
 
-gatsby-core-utils@^1.0.24, gatsby-core-utils@^1.0.26:
-  version "1.0.26"
-  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.26.tgz#e1cbdfad498d58d677d9d74f21a1ede661b49d6f"
-  integrity sha512-NPflmXmyTcg3x2mp6cqp/51QeAHRKepfbf0X4erDsnVlewFJuGTe+25ZJvWkkwU2g1cPAxuwzlPe0jOL92iU4A==
+gatsby-core-utils@^1.0.24, gatsby-core-utils@^1.0.26, gatsby-core-utils@^1.0.28:
+  version "1.0.28"
+  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.28.tgz#aa66e49cdcc1892e7817a32fdd806cf5e16ea309"
+  integrity sha512-XWKR9Rk2v6iQkmBsTLCdI3adyC9PCh1s5BQ85nlGitlgcVVQq98jZlQdcy0v9mJOrTuce0uf5RqkeGDWFLekoA==
   dependencies:
     ci-info "2.0.0"
     node-object-hash "^2.0.0"
@@ -10751,9 +10743,9 @@ gatsby-plugin-google-fonts@^1.0.0:
   integrity sha512-p1NVkn27GUnDA5qHM+Z4cCcLCJIardzZXMon3640sT4xuL/AZJbsx3HEt2KY/5oZu0UXIkytkxzV2Da4rQeUIg==
 
 gatsby-plugin-mdx@^1.0.4, gatsby-plugin-mdx@^1.0.67:
-  version "1.0.67"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-mdx/-/gatsby-plugin-mdx-1.0.67.tgz#1c2d80606a4c6b112164f46fad0a81b146603884"
-  integrity sha512-PG1j8voD1hCBrj1blw1CqiJlXMv+QATVllvqClKl47GfCOZAuVj+VMN6O9WbImc5sVUw/SuvfCTOpk9H7gHlPw==
+  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==
   dependencies:
     "@babel/core" "^7.7.5"
     "@babel/generator" "^7.7.4"
@@ -10770,7 +10762,7 @@ gatsby-plugin-mdx@^1.0.4, gatsby-plugin-mdx@^1.0.67:
     escape-string-regexp "^1.0.5"
     eval "^0.1.4"
     fs-extra "^8.1.0"
-    gatsby-core-utils "^1.0.26"
+    gatsby-core-utils "^1.0.28"
     gray-matter "^4.0.2"
     json5 "^2.1.1"
     loader-utils "^1.2.3"