fix: catch other GH exceptions for no object

[beckermr]

Description:

The GH API changed and we need to catch an additional set of exceptions for testing if files exist.

Checklist:

• Pydantic model updated or no update needed

Cross-refs, links to issues, etc:

[ytausch]

I think there is more to address.

[beckermr]

done!

[beckermr]

FYI, the bot is currently offline and can't be restarted until we merge this PR.

[ytausch]

What about the remaining comment? Now that we have the type annotation in the type signature we can leave out the second isinstance check.

Edit: all clear!

[beckermr]

Yes Sorry I missed that last comment!

[beckermr]

thank you for the prompt code review and great suggestions!

[codecov]

Codecov Report

Attention: Patch coverage is 73.33333% with 4 lines in your changes missing coverage. Please review.

Project coverage is 77.12%. Comparing base (5925be4) to head (eacad79).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
conda_forge_tick/lazy_json_backends.py	66.66%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3620      +/-   ##
==========================================
- Coverage   77.13%   77.12%   -0.01%     
==========================================
  Files         132      132              
  Lines       14728    14738      +10     
==========================================
+ Hits        11360    11367       +7     
- Misses       3368     3371       +3     

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