Bump @babel/runtime from 7.3.1 to 7.3.4

Bumps [@babel/runtime](https://github.com/babel/babel) from 7.3.1 to 7.3.4.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](babel/babel@v7.3.1...v7.3.4)

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

yarn.lock

@@ -646,9 +646,9 @@
     semver "^5.3.0"
 
 "@babel/runtime@^7.2.0", "@babel/runtime@^7.3.1":
-  version "7.3.1"
-  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.3.1.tgz#574b03e8e8a9898eaf4a872a92ea20b7846f6f2a"
-  integrity sha512-7jGW8ppV0ant637pIqAcFfQDDH1orEPGJb8aXfUozuCU3QqX7rX4DA8iwrbPrR1hcH0FTTHz47yQnk+bl5xHQA==
+  version "7.3.4"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.3.4.tgz#73d12ba819e365fcf7fd152aed56d6df97d21c83"
+  integrity sha512-IvfvnMdSaLBateu0jfsYIpZTxAc2cKEXEMiezGGN75QcBcecDUKd3PgLAncT0oOgxKy8dd8hrJKj9MfzgfZd6g==
   dependencies:
     regenerator-runtime "^0.12.0"