Print the errors of the check_license.py

[psaiz]

Check the output of this action:

Run ./run-tests.sh --data-licenses
[INFO] Successfully validated file cms-trigger-information-2012.json
[INFO] Successfully validated file cms-pileup-datasets-2012.json
...
[INFO] Processed 3[28](https://github.com/cernopendata/opendata.cern.ch/actions/runs/14442278086/job/40494898258#step:4:29) files within 1.99 seconds.
Error:  Validation completed with 1 errors!
	Please ensure the licenses are one of the following: ['CC0-1.0', 'GPL-3.0-only', 'MIT', 'Apache-2.0', 'BSD-3-Clause'].
	If you are using a valid SPDX license string that is not in the above list, please contact `opendata-team@cern.ch`.
Error: Process completed with exit code 1.

It would be useful to have the ERROR messages fro the files that are not validated. In cases like invalid json, they just fail silently.
I would also demote the [INFO] Successfully validated file .. to DEBUG level.

[Biscgit]

Thanks for the reporting!

The issue with that pipeline in this case is, that one of the JSON documents has an invalid format (caught by the data-json action).
The license-checker only prints out license specific checks, but still catches the general error on loading the file.

I will add a try...except block to the loading of the file.