Bump @babel/node from 7.8.3 to 7.8.4

Bumps [@babel/node](https://github.com/babel/babel) from 7.8.3 to 7.8.4.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.8.3...v7.8.4)

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

Author: dependabot-preview[bot]

yarn.lock

@@ -258,9 +258,9 @@
     js-tokens "^4.0.0"
 
 "@babel/node@^7.0.0":
-  version "7.8.3"
-  resolved "https://registry.yarnpkg.com/@babel/node/-/node-7.8.3.tgz#29784d445e135ca7214a9ac40535f2b8d2f980aa"
-  integrity sha512-GZpHg1gPnZTk1PvHRc4g/M5c50nHERkk3ojb5AuUTZFAjEKzDhBJcqvwWa7NrNT3W3Nf8t8Sj8JjA6rtXJ1z/g==
+  version "7.8.4"
+  resolved "https://registry.yarnpkg.com/@babel/node/-/node-7.8.4.tgz#59b2ed7e5a9df2224592f83292d77d616fbf1ab8"
+  integrity sha512-MlczXI/VYRnoaWHjicqrzq2z4DhRPaWQIC+C3ISEQs5z+mEccBsn7IAI5Q97ZDTnFYw6ts5IUTzqArilC/g7nw==
   dependencies:
     "@babel/register" "^7.8.3"
     commander "^4.0.1"