Use PickleError base class to detect all pickle errors

[SpontaneousDuck]

What does this PR do?

Fixes #6902

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First PR!

[codecov]

Codecov Report

Merging #6917 (d266c36) into master (03a73b3) will decrease coverage by 5%.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master   #6917    +/-   ##
=======================================
- Coverage      92%     87%    -5%     
=======================================
  Files         194     194            
  Lines       12419   12419            
=======================================
- Hits        11419   10771   -648     
- Misses       1000    1648   +648     

[awaelchli]

Could you also add a test under tests/utilities/test_parsing.py in the test called "test_is_picklable" with your object that wasn't picklable?

[SpontaneousDuck]

How does that look? My model has PyTorch ScriptModule in it so I added an empty ScriptModule to the test. I verified this throws the same error I am receiving in #6902 .

[awaelchli]

perfect, thanks for the fix

[tchaton]

Great addition !