feat: use ghcr image to run approbation

[mkjmdski]

The approbation run on the specs repo CI is failing:

• https://github.com/vegaprotocol/specs/actions/workflows/quality_check.yml

All failing with the same error:

Error: Process completed with exit code 1.```

[edd]

These are fine. Other runs may need to use the new --output="/workspace/results" param. This is only required if --output-jenkins or --output-csv are used (stupidly I defaulted it to ./results which fails inside docker)