Changelog 1.15.8 (#18026)

Changelog 1.15.8 (#18026)

## [1.15.8](https://github.com/go-gitea/gitea/releases/tag/v1.15.8) - 2021-12-19

* BUGFIXES
  * Reset locale on login (#18023) (#18025)
  * Fix reset password email template (#17025) (#18022)
  * Fix outType on gitea dump (#18000) (#18016)
  * Ensure complexity, minlength and isPwned are checked on password setting (#18005) (#18015)
  * Fix rename notification bug (#18011)
  * Prevent double decoding of % in url params  (#17997) (#18001)
  * Prevent hang in git cat-file if the repository is not a valid repository (Partial #17991) (#17992)
  * Prevent deadlock in create issue (#17970) (#17982)
* TESTING
  * Use non-expiring key. (#17984) (#17985)

Signed-off-by: Andrew Thornton <art27@cantab.net>
* Update CHANGELOG.md

Co-authored-by: 6543 <6543@obermui.de>