Bump gatsby-plugin-react-helmet from 2.0.7 to 2.0.8

Bumps [gatsby-plugin-react-helmet](https://github.com/gatsbyjs/gatsby) from 2.0.7 to 2.0.8.
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package.json

@@ -10,7 +10,7 @@
     "gatsby-plugin-google-analytics": "^1.0.22",
     "gatsby-plugin-lodash": "^1.0.11",
     "gatsby-plugin-netlify": "^1.0.19",
-    "gatsby-plugin-react-helmet": "^2.0.7",
+    "gatsby-plugin-react-helmet": "^2.0.8",
     "gatsby-plugin-react-next": "^1.0.11",
     "gatsby-plugin-remove-trailing-slashes": "^1.0.7",
     "gatsby-plugin-sentry": "^0.0.3",

yarn.lock

@@ -4881,9 +4881,9 @@ gatsby-plugin-netlify@^1.0.19:
     lodash "^4.17.4"
     webpack-assets-manifest "^1.0.0"
 
-gatsby-plugin-react-helmet@^2.0.7:
-  version "2.0.7"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-react-helmet/-/gatsby-plugin-react-helmet-2.0.7.tgz#f2d7836147f28cd3d3a7eae82b5ac6978c4c5e34"
+gatsby-plugin-react-helmet@^2.0.8:
+  version "2.0.8"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-react-helmet/-/gatsby-plugin-react-helmet-2.0.8.tgz#26928bfd38f6828f479d76393839523ddf85b005"
   dependencies:
     babel-runtime "^6.26.0"