improve(plugins_sync): handle cases where a downloaded plugin is not a valid ZIP

[Guts]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 70.43%. Comparing base (01799f1) to head (97b1dbd).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...ployment_toolbelt/jobs/job_plugins_synchronizer.py	50.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #577      +/-   ##
==========================================
- Coverage   70.48%   70.43%   -0.06%     
==========================================
  Files          47       47              
  Lines        3158     3162       +4     
  Branches      554      554              
==========================================
+ Hits         2226     2227       +1     
- Misses        738      741       +3     
  Partials      194      194              

Flag	Coverage Δ
unittests	69.86% <50.00%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ployment_toolbelt/jobs/job_plugins_synchronizer.py	74.24% <50.00%> (-3.18%)	⬇️

[jmkerloch]

LGTM ! 🚀

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud