Update libzmq manifest to use libzmq3-dev

Summary:
- OpenR building has been broken for quite awhile and it seems this is the main cause

Example CI Failure: https://github.com/facebook/openr/runs/631232675?check_suite_focus=true

Reviewed By: wez

Differential Revision: D22737174

fbshipit-source-id: 31d44c36d495295d30fe3ddc81991dafed100703

build/fbcode_builder/manifests/libzmq

@@ -6,7 +6,7 @@ zeromq-devel
 zeromq
 
 [debs]
-libzmq-dev
+libzmq3-dev
 
 [download]
 url = https://github.com/zeromq/libzmq/releases/download/v4.3.1/zeromq-4.3.1.tar.gz