[CI] Add post deployment conda and pypi cron tests

[IAlibay]

Fixes #4208

Changes made in this Pull Request:

PR Checklist

• Tests?
• Docs?
• CHANGELOG updated?
• Issue raised/referenced?

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📚 Documentation preview 📚: https://mdanalysis--4210.org.readthedocs.build/en/4210/

[github-actions]

Linter Bot Results:

Hi @IAlibay! Thanks for making this PR. We linted your code and found the following:

There are currently no issues detected! 🎉

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (a1aff66) 93.62% compared to head (b3066bc) 93.62%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4210   +/-   ##
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  Coverage    93.62%   93.62%           
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  Files          193      193           
  Lines        25295    25295           
  Branches      4063     4063           
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  Hits         23683    23683           
  Misses        1096     1096           
  Partials       516      516           

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[IAlibay]

Ok current CI test failuires are down to known issues so I won't fix them here:

• numpy_and_scipy_dev will be fixed by Switch to scientifc python nightly package location for cron tests against upstream nightly wheels #4203
• macos conda release checks are broken because of [2.5.0] Center of charge test failures on macOS runners #4211

@MDAnalysis/coredevs if I can get a review / merge here we can move forward towards fixing #4211

[orbeckst]

This looks good as far as I can tell. I don’t know how you’ve tested that the cron job ran but I trust your report.

Thank you for adding these tests!

[IAlibay]

Thanks! Cron jobs were just enabled to run on this PR until ~ 2 commits ago.

[orbeckst]

Please merge at your leisure.