Update deps for Java 9 support

[tirkarthi]

It seems the project uses some modules that are not compatible with Java 9.

• core.async - Fixed with 0.3.442 (clojure/core.async@2f87bc7)
• aleph - Fixed with 0.4.5-alpha6 (clj-commons/aleph@b4a49a8)

This is filed using data from clojars.org . Feel free to close this if it's irrelevant.