Update changelogs about 13.0.11 being skipped

CHANGELOG-EE.md

@@ -563,7 +563,7 @@ Please view this file on the master branch, on stable branches it's out of date.
 
 ## 13.0.11 (2020-08-05)
 
-- No changes.
+This version has been skipped due to packaging problems.
 
 ## 13.0.10 (2020-07-09)
 

CHANGELOG.md

@@ -1600,19 +1600,7 @@ entry.
 
 ## 13.0.11 (2020-08-05)
 
-### Security (10 changes)
-
-- Add decompressed archive size validation on Project/Group Import. !562
-- Enforce 2FA on Doorkeeper controllers.
-- Refresh project authorizations when transferring groups.
-- Stop excess logs from failure to send invite email when group no longer exists.
-- Verify confirmed email for OAuth Authorize POST endpoint.
-- Revoke OAuth grants when a user revokes an application.
-- Fix XSS in Markdown reference tooltips.
-- Fix XSS in milestone tooltips.
-- Fix xss vulnerability on jobs view.
-- Block 40-character hexadecimal branches.
-
+This version has been skipped due to packaging problems.
 
 ## 13.0.10 (2020-07-09)