Change handling, when no licence was found

[MalteSpielberger]

In the current version of the go-licence-detector, the application will stop when no license can be found for a dependency. The error-message says, that an override entry will be added, so the application can continue. But in my case, the application ends at this point.

I have made an change, so that the application logs an information and continues. The dependency with the unknown license will be skipped and the application continues.

[cla-checker-service[bot]]

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