Fix deprecate f-string usage

[liamhuber]

And scope references using the qualname instead of name

[github-actions]

👈 Launch a binder notebook on branch pyiron/pyiron_snippets/deprecate_f

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.34%. Comparing base (541f58c) to head (37525a2).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #69   +/-   ##
=======================================
  Coverage   95.34%   95.34%           
=======================================
  Files          15       15           
  Lines         602      602           
=======================================
  Hits          574      574           
  Misses         28       28           

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[liamhuber]

@samwaseda, I'm just going to merge and release, but we can tweak it further afterwards if you're not happy.