v1.21.3

* SECURITY
  * Update golang.org/x/crypto (#28519)
* API
  * Fix merging artifact chunks error when minio storage basepath is set (#28555) (#28568)
  * chore(api): support ignore password if login source type is LDAP for creating user API (#28491) (#28525)
  * Add endpoint for not implemented Docker auth (#28457) (#28462)
* ENHANCEMENTS
  * Add option to disable ambiguous unicode characters detection (#28454) (#28499)
  * Refactor SSH clone URL generation code (#28421) (#28480)
  * Polyfill SubmitEvent for PaleMoon (#28441) (#28478)
* BUGFIXES
  * Fix the issue ref rendering for wiki (#28556) (#28559)
  * Fix duplicate ID when deleting repo (#28520) (#28528)
  * Only check online runner when detecting matching runners in workflows (#28286) (#28512)
  * Initalize stroage for orphaned repository doctor (#28487) (#28490)
  * Fix possible nil pointer access (#28428) (#28440)
  * Don't show unnecessary citation JS error on UI (#28433) (#28437)
* DOCS
  * Update actions document about comparsion as Github Actions (#28560) (#28564)
  * Fix documents for "custom/public/assets/" (#28465) (#28467)
* MISC
  * Fix inperformant query on retrifing review from database. (#28552) (#28562)
  * Improve the prompt for "ssh-keygen sign" (#28509) (#28510)
  * Update docs for DISABLE_QUERY_AUTH_TOKEN (#28485) (#28488)
  * Fix Chinese translation of config cheat sheet[API] (#28472) (#28473)
  * Retry SSH key verification with additional CRLF if it failed (#28392) (#28464)
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