[FLINK-20598] Update playgrounds for Flink 1.12

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.12.0
• Fix Version/s: 1.12.1
• Component/s: Documentation / Training
• Labels: pull-request-available
• Assignee: Victor Xu
• Reporter: David Anderson
• Created: 14/Dec/20 10:56
• Updated: 27/Jan/21 10:48
• Resolved: 27/Jan/21 10:46

Description

The various playgrounds all need to be updated for the new 1.12.0 release.

Issue Links

• links to: GitHub Pull Request #21