release.yml workflow failing to check new releases

[maread99]

Same issue as gerrymanoim/exchange_calendars#207.

The release workflow deploys to PyPI ok, although fails on the subsequent install and import check.

As noted here, looks like an error in the workflow's while loop.

Workflow failed on checking the 0.10.2 release although until then had always passed (never previously having entered the while loop).

[maread99]

PR #156 includes changes to the release workflow to at least provide more info as to where within the while loop this might be failing. See what happens with the next release. (#166 adds a bit more.)

[maread99]

After changing the release workflow to explicitly define the shell as bash (as also implemented to exchange-calendars):

• 0.11.2 released fine, although never entered the loop so unable to tell if the issue's been resolved.