fix(down): Adding error handling to get_non_shared_remote_dependencies

[IanWoodard]

Currently we don't handle exceptions for get_non_shared_remote_dependencies, which this change aims to address.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.

Project coverage is 92.48%. Comparing base (2af25a6) to head (5a9dcef).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
devservices/commands/down.py	33.33%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #180      +/-   ##
==========================================
- Coverage   92.75%   92.48%   -0.28%     
==========================================
  Files          22       22              
  Lines        1339     1344       +5     
==========================================
+ Hits         1242     1243       +1     
- Misses         97      101       +4     

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