Update docker.io/gitea/gitea Docker tag to v1.23.4

No problems automatically updating patch version Docker image and run the container by Watchtower with dependency update facilitated by Mend's Renovate Bot.

This MR contains the following updates:

Package	Update	Change
docker.io/gitea/gitea	patch	`1.23.3-rootless` -> `1.23.4-rootless`

Release Notes

go-gitea/gitea (docker.io/gitea/gitea)

`v1.23.4`

Compare Source

SECURITY
- Enhance routers for the Actions variable operations (#33547) (#33553)
- Enhance routers for the Actions runner operations (#33549) (#33555)
- Fix project issues list and counting (#33594) #33619
PERFORMANCES
- Performance optimization for pull request files loading comments attachments (#33585) (#33592)
BUGFIXES
- Add a transaction to pickTask (#33543) (#33563)
- Fix mirror bug (#33597) (#33607)
- Use default Git timeout when checking repo health (#33593) (#33598)
- Fix MR's target branch dropdown (#33589) (#33591)
- Fix various problems (artifact order, api empty slice, assignee check, fuzzy prompt, mirror proxy, adopt git) (#33569) (#33577)
- Rework suggestion backend (#33538) (#33546)
- Fix context usage (#33554) (#33557)
- Only show the latest version in the Arch index (#33262) (#33580)
- Skip deletion error for action artifacts (#33476) (#33568)
- Make actions URL in commit status webhooks absolute (#33620) #33632
- Add missing locale (#33641) #33642

Instances on Gitea Cloud will be automatically upgraded to this version during the specified maintenance window.