Update beat-devel to match the latest bob-devel

conda/beat-devel/meta.yaml

 package:
   name: beat-devel
-  version: 2018.04.24
+  version: 2018.04.26
 
 build:
   number: 0
@@ -12,7 +12,7 @@ build:
 requirements:
   host:
     - python {{ python }}
-    - bob-devel 2018.04.13
+    - bob-devel 2018.04.24
     - requests 2.18.4
     - simplejson 3.13.2
     - pyzmq 17.0.0