Ensure only files ending with pyc are excluded from desired state uploads

[craddm]

✅ Checklist

• You have given your pull request a meaningful title (e.g. Enable foobar integration rather than 515 foobar).
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🚦 Depends on

⤴️ Summary

Change the method of excluding .pyc files from upload. Now gets a list of all files and filters them afterwards, rather than trying to filter using rglob.

🌂 Related issues

Closes #2395

🔬 Tests

Tested with a newly deployed VM

[github-actions]

Coverage report

This PR does not seem to contain any modification to coverable code.

[JimMadge]

Good catch, LGTM 👍.

I thought I was being clever using a glob. This is probably slower but it is a lot more readable (and correct!).

By the way, the bug is in develop right? If the bug is in latest this should be a patch release.