Don't fail on missing .xcresult files if multiple are passed

[benkay]

We have multiple test steps, and as a result end up with multiple .xcresult files.
I tried passing all the result bundle paths to a single xcresulttool action, but if not all the .xcresult files have been generated for a run, then the action immediately fails with a no such file or directory error.

This is a problem since if some test steps are skipped due to an earlier failure, not all of the possible .xcresult files will be generated, making the ability to pass multiple result bundles to the same xcresulttool step useless to us

[baksha97]

Have you tried continue-on-failure?

    - name: Any fallible 
      run: curl --fail www.blah.com
      continue-on-error: true