chore(deps): bump @babel/runtime from 7.7.7 to 7.8.4

Bumps [@babel/runtime](https://github.com/babel/babel/tree/HEAD/packages/babel-runtime) from 7.7.7 to 7.8.4.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v7.8.4/packages/babel-runtime)

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

yarn.lock

@@ -974,9 +974,9 @@
     regenerator-runtime "^0.13.2"
 
 "@babel/runtime@^7.0.0", "@babel/runtime@^7.2.0", "@babel/runtime@^7.3.0", "@babel/runtime@^7.4.2":
-  version "7.7.7"
-  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.7.7.tgz#194769ca8d6d7790ec23605af9ee3e42a0aa79cf"
-  integrity sha512-uCnC2JEVAu8AKB5do1WRIsvrdJ0flYx/A/9f/6chdacnEZ7LmavjdsDXr5ksYBegxtuTPR5Va9/+13QF/kFkCA==
+  version "7.8.4"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.8.4.tgz#d79f5a2040f7caa24d53e563aad49cbc05581308"
+  integrity sha512-neAp3zt80trRVBI1x0azq6c57aNBqYZH8KhMm3TaB7wEI5Q4A2SHfBHE8w9gOhI/lrqxtEbXZgQIrHP+wvSGwQ==
   dependencies:
     regenerator-runtime "^0.13.2"