Version bump to v2.4.0.beta5

Version bump to v2.4.0.beta5

diff --git a/lib/version.rb b/lib/version.rb
index 66d3e99..45d3950 100644
--- a/lib/version.rb
+++ b/lib/version.rb
@@ -9,7 +9,7 @@ module Discourse
       MAJOR = 2
       MINOR = 4
       TINY  = 0
-      PRE   = 'beta4'
+      PRE   = 'beta5'
 
       STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
     end

GitHub sha: 279a94da