Log Message:
gitea: Update to 1.11.4

## [1.11.4](https://github.com/go-gitea/gitea/releases/tag/v1.11.4) - 2020-04-01

* BUGFIXES
  * Only update merge_base if not already merged (#10909)
  * Fix milestones too many SQL variables bug (#10880) (#10904)
  * Protect against NPEs in notifications list (#10879) (#10883)
  * Convert plumbing.ErrObjectNotFound to git.ErrNotExist in getCommit (#10862) \ 
(#10868)
  * Convert plumbing.ErrReferenceNotFound to git.ErrNotExist in GetRefCommitID \ 
(#10676) (#10797)
  * Account for empty lines in receive-hook message (#10773) (#10784)
  * Fix bug on branch API (#10767) (#10775)
  * Migrate to go-git/go-git v5.0.0 (#10735) (#10753)
  * Fix hiding of fields in authorization source page (#10734) (#10752)
  * Prevent default for linkAction (#10742) (#10743)