[DAFFODIL-2301] Update github actions/checkout to v2

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.6.0
• Component/s: Infrastructure
• Assignee: Steve Lawrence
• Reporter: Steve Lawrence
• Created: 24/Mar/20 14:48
• Updated: 13/Apr/20 14:35
• Resolved: 24/Mar/20 21:45

Description

There's an bug v1 that prevents rerunning builds, which is necessary due to random failures (e.g. network failure when downloading dependencies). Supposedly v2 fixes this issue.