[FLINK-20300] Create Flink 1.12 release notes

• Type: Task
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.12.0
• Fix Version/s: 1.12.1, 1.13.0
• Component/s: Documentation
• Labels: pull-request-available
• Assignee: Robert Metzger
• Reporter: Robert Metzger
• Created: 23/Nov/20 15:34
• Updated: 08/Dec/20 07:03
• Resolved: 08/Dec/20 07:03

Issue Links

• links to: GitHub Pull Request #14195