SARIF: raise an exception whenever an absolute non-file: URI is encountered

[0x6675636b796f75676974687562]

Example:

"artifactLocation": {
                  "uri": "https://github.com/ossf/scorecard/blob/main/actions/entrypoint.sh"
                }

When save-cli is used as an executable (rather than as a library), a specific exit code should be returned — see #467

[kgevorkyan]

Decided to raise an exception in this case