Version bump to v2.6.0.beta3

Version bump to v2.6.0.beta3

diff --git a/lib/version.rb b/lib/version.rb
index addca5b..e65fa22 100644
--- a/lib/version.rb
+++ b/lib/version.rb
@@ -10,7 +10,7 @@ module Discourse
       MAJOR = 2
       MINOR = 6
       TINY  = 0
-      PRE   = 'beta2'
+      PRE   = 'beta3'
 
       STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
     end

GitHub sha: 2a268bd8

This commit has been mentioned on Discourse Meta. There might be relevant details there:

https://meta.discourse.org/t/bookmarking-a-post-on-a-large-thread-creates-absurd-loading-times/168041/7