Version bump to v2.8.0.beta3 (#13703)

Version bump to v2.8.0.beta3 (#13703)

diff --git a/lib/version.rb b/lib/version.rb
index 359f0a4..88a32aa 100644
--- a/lib/version.rb
+++ b/lib/version.rb
@@ -10,7 +10,7 @@ module Discourse
       MAJOR = 2
       MINOR = 8
       TINY  = 0
-      PRE   = 'beta2'
+      PRE   = 'beta3'
 
       STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.')
     end

GitHub sha: 5f8fa976d45c9e00a2a289cc18593e1af110783e

This commit appears in #13703 which was approved by davidtaylorhq. It was merged by nlalonde.