[JDO-822] Verify compatibility with JDK 21

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: JDO 3.2.1
• Fix Version/s: JDO 3.2.2
• Component/s: api, tck
• Assignee: Unassigned
• Reporter: Tilmann Zäschke
• Created: 13/Dec/22 10:05
• Updated: 01/Nov/23 07:58
• Resolved: 31/Oct/23 19:31

Description

JDK 21 reached General Availability on 19 September 2023, so we should go for JDK 21 instaed of JDK 20.

Issue Links

• links to: GitHub Pull Request #84