add backwards compatibility PrettyTables

[lazarusA]

ok. I see that is easier to just make our tiny use of PrettyTables compatible with the older version, rather than fixing compat bounds in other packages.

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 30.09%. Comparing base (3013fb5) to head (b6591c1).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/utils/show_generic.jl	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #211      +/-   ##
==========================================
+ Coverage   30.03%   30.09%   +0.06%     
==========================================
  Files          32       32              
  Lines        1818     1821       +3     
==========================================
+ Hits          546      548       +2     
- Misses       1272     1273       +1     

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