Bump async from 2.6.3 to 2.6.4

Bumps [async](https://github.com/caolan/async) from 2.6.3 to 2.6.4.
- [Release notes](https://github.com/caolan/async/releases)
- [Changelog](https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md)
- [Commits](caolan/async@v2.6.3...v2.6.4)

---
updated-dependencies:
- dependency-name: async
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

yarn.lock

@@ -1176,6 +1176,7 @@
   integrity sha512-nvslHi77gv1Vc44rZb2QamQyWhWGhooXDnVCIA6BZUpiArMWZ3TNYaDCXLWQTSvz14UdcYN8WIIt9v/vcD/wqg==
 
 "@cityofzion/neon-core-next@npm:@cityofzion/neon-core@^5.0.0", "@cityofzion/neon-core@^5.0.0":
+  name "@cityofzion/neon-core-next"
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/@cityofzion/neon-core/-/neon-core-5.0.0.tgz#6b242782404df474285ad7760224871444cc1d35"
   integrity sha512-OJPZsgWxXFCSSFo6WiGmxn+/2XP0w0JXT8oYOqYxKfFYJXNh6/ENuglMs7w5jMpFsYb/Hp6Hy8qdXf/Q3Es9jg==
@@ -3901,9 +3902,9 @@ async-limiter@~1.0.0:
   integrity sha512-csOlWGAcRFJaI6m+F2WKdnMKr4HhdhFVBk0H/QbJFMCr+uO2kwohwXQPxw/9OCxp05r5ghVBFSyioixx3gfkNQ==
 
 async@^2.6.2:
-  version "2.6.3"
-  resolved "https://registry.npmjs.org/async/-/async-2.6.3.tgz"
-  integrity sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/async/-/async-2.6.4.tgz#706b7ff6084664cd7eae713f6f965433b5504221"
+  integrity sha512-mzo5dfJYwAn29PeiJ0zvwTo04zj8HDJj0Mn8TD7sno7q12prdbnasKJHhkm2c1LgrhlJ0teaea8860oxi51mGA==
   dependencies:
     lodash "^4.17.14"