chore(main): release 28.3.0

[daschbot]

🤖 I have created a release beep boop

28.3.0 (2023-05-25)

Bug Fixes

• add integration Test for Sipi and fix broken responses (NO-TICKET) (#2675) (f8c3aa0)
• Fix Sipi get file response if dsp-api responds with Not Found during permission check (NO-TICKET) (#2677) (4e1c6c2)

Enhancements

• Align authorization for all endpoints of knora-sipi (DEV-2175) (#2669) (ff59664)
• sipi: add clean temp dir cronjob (DEV-2090) (#2656) (7af1c27)

Maintenance

• add more gravsearch metrics (#2666) (873eb46)
• add more tests for Sipi responses (NO-TICKET) (#2679) (74f49ca)
• Create license headers for all it files (NO-TICKET) (#2676) (a97ec6b)
• improve lucene handling in gravsearch (DEV-2148) (#2667) (bf5d4be)
• merge duplicated StringFormatter and value objects methods part 1 (DEV-2046) (#2672) (655590a)
• remove deprecated StringFormatter methods (#2658) (62eb63c)
• Remove GroupShortADM (NO-TICKET) (#2674) (3676fbf)
• Resolve compiler warning toObjsWithLang (NO-TICKET) (#2671) (dc7e2c2)
• sipi: increase healthcheck timeout and retries (#2670) (5dd994d)

---

This PR was generated with Release Please. See documentation.

[daschbot]

🤖 Release is at https://github.com/dasch-swiss/dsp-api/releases/tag/v28.3.0 🌻