v2.1.0: Use actual bash scripting syntax

When the if condition doesn't match the GitHub action workflow stops and the pipeline fails, use proper bash syntax to fix it.

Also update the setup-python action to the latest version.

v2.0.0

Full Changelog: v1...v2.0.0

v1.12.0: Use actual bash scripting syntax

When the if condition doesn't match the GitHub action workflow stops and the pipeline fails, use proper bash syntax to fix it.

Also update the setup-python action to the latest version.