make CI: Don't warn about missing CT log files

This can happen if the plugin isn't using CT, or if running
Dialyzer, for example.

Author: lhoguin

.github/workflows/test-make-target.yaml

@@ -64,3 +64,4 @@ jobs:
         path: |
           deps/${{ inputs.plugin }}/logs/
           !deps/${{ inputs.plugin }}/logs/**/log_private
+        if-no-files-found: ignore