v1.18.1

* API
  * Add `sync_on_commit` option for push mirrors api (#22271) (#22292)
* BUGFIXES
  * Update `github.com/zeripath/zapx/v15` (#22485)
  * Fix pull request API field `closed_at` always being `null` (#22482) (#22483)
  * Fix container blob mount (#22226) (#22476)
  * Fix error when calculating repository size (#22392) (#22474)
  * Fix Operator does not exist bug on explore page with ONLY_SHOW_RELEVANT_REPOS (#22454) (#22472)
  * Fix environments for KaTeX and error reporting (#22453) (#22473)
  * Remove the netgo tag for Windows build (#22467) (#22468)
  * Fix migration from GitBucket (#22477) (#22465)
  * Prevent panic on looking at api "git" endpoints for empty repos (#22457) (#22458)
  * Fix PR status layout on mobile (#21547) (#22441)
  * Fix wechatwork webhook sends empty content in PR review (#21762) (#22440)
  * Remove duplicate "Actions" label in mobile view (#21974) (#22439)
  * Fix leaving organization bug on user settings -> orgs (#21983) (#22438)
  * Fixed colour transparency regex matching in project board sorting (#22092) (#22437)
  * Correctly handle select on multiple channels in Queues (#22146) (#22428)
  * Prepend refs/heads/ to issue template refs (#20461) (#22427)
  * Restore function to "Show more" buttons (#22399) (#22426)
  * Continue GCing other repos on error in one repo (#22422) (#22425)
  * Allow HOST has no port (#22280) (#22409)
  * Fix omit avatar_url in discord payload when empty (#22393) (#22394)
  * Don't display stop watch top bar icon when disabled and hidden when click other place (#22374) (#22387)
  * Don't lookup mail server when using sendmail (#22300) (#22383)
  * Fix gravatar disable bug (#22337)
  * Fix update settings table on install (#22326) (#22327)
  * Fix sitemap (#22272) (#22320)
  * Fix code search title translation (#22285) (#22316)
  * Fix due date rendering the wrong date in issue (#22302) (#22306)
  * Fix get system setting bug when enabled redis cache (#22298)
  * Fix bug of DisableGravatar default value (#22297)
  * Fix key signature error page (#22229) (#22230)
* TESTING
  * Remove test session cache to reduce possible concurrent problem (#22199) (#22429)
* MISC
  * Restore previous official review when an official review is deleted (#22449) (#22460)
  * Log STDERR of external renderer when it fails (#22442) (#22444)
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