[FLINK-20597] Update flink training exercises to 1.12

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Done
• Affects Version/s: 1.12.0
• Fix Version/s: 1.12.0
• Component/s: Documentation / Training / Exercises
• Assignee: David Anderson
• Reporter: David Anderson
• Created: 14/Dec/20 10:38
• Updated: 16/Jan/21 16:10
• Resolved: 16/Jan/21 16:02

Description

The flink-training repo needs to be updated for 1.12.