8.2.20211020114435

What's Changed

• Link existence checking should follow redirects by @tetron in #450
• GitHub Actions: cancel outdated jobs by @mr-c in #452
• synchronize recent changes from other CWL repos by @mr-c in #454
• sync typeshed changes from cwltool by @mr-c in #453
• Follow links by @tetron in #455
• GA: use different concurrency groups per action by @mr-c in #456
• Bump codecov/codecov-action from 1 to 2.1.0 by @dependabot in #457
• Python Codegen: properly load SecondaryFiles DSL by @mr-c in #458

Full Changelog: 8.2.20211015115235...8.2.20211020114435