Fix changelog (1.21) (#30583)

Author: wxiaoguang

CHANGELOG.md

@@ -9,6 +9,7 @@ been added to each release, please refer to the [blog](https://blog.gitea.com).
 * SECURITY
   * Use go1.21.9 to include Golang security fix
   * Fix possible renderer security problem (#30136) (#30315)
+  * Performance optimization for git push and check permissions for push options (#30104) (#30354)
 * BUGFIXES
   * Fix close file in the Upload func (#30262) (#30269)
   * Fix inline math blocks can't be preceeded/followed by alphanumerical characters (#30175) (#30250)
@@ -18,12 +19,10 @@ been added to each release, please refer to the [blog](https://blog.gitea.com).
   * Load attachments for code comments (#30124) (#30126)
   * Fix gitea doctor will remove repo-avatar files when executing command storage-archives (#30094) (#30120)
   * Fix possible data race on tests (#30093) (#30108)
-  * Performance optimization for git push (#30104)
   * Fix duplicate migrated milestones (#30102) (#30105)
   * Fix panic for fixBrokenRepoUnits16961 (#30068) (#30100)
-  * Fix incorrect SVGs (#30087)
+  * Fix incorrect SVGs (#30086) (#30087)
   * Fix create commit status (#30225) (#30340)
-  * Performance optimization for git push (#30104) (#30354)
   * Fix misuse of unsupported global variables (#30402)
   * Fix to delete the cookie when AppSubURL is non-empty (#30375) (#30468)
   * Avoid user does not exist error when detecting schedule actions when the commit author is an external user (#30357) (#30408)