check for Chart.yaml instead of optional values.yaml

[gilesknap]

Not all services require a values.yaml and the error still mentioned IOCs.

[marcelldls]

Makes sense. I believe the test data needs a Chart.yaml

[gilesknap]

yeah that was a hasty fix :-)

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 86.80%. Comparing base (08ecdb2) to head (01a0e31).

Files	Patch %	Lines
src/edge_containers_cli/utils.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #117   +/-   ##
=======================================
  Coverage   86.80%   86.80%           
=======================================
  Files          14       14           
  Lines         788      788           
=======================================
  Hits          684      684           
  Misses        104      104           

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