Suboptimal error message on token delete with invalid credentials

[scop]

Environment (required):

• OS: [e.g. macOS (Darwin or M1), Linux, Windows] Linux
• Version [e.g. 1.2.0, "upctl version" gives you this] 3.16.1

Describe the bug
upctl account token delete THING error message is not as pretty as it c/should when accessed using invalid credentials.

To Reproduce
Steps to reproduce the behavior:

1. Configure invalid credentials
2. upctl account token delete FOO

Expected behavior

$ upctl account token delete FOO
✗ Command execution failed                                                                                                                                                     
  Error: error: message="Authentication failed using the given username and password.", type="AUTHENTICATION_FAILED"

Observed behavior

$ upctl account token delete FOO
Error: cannot resolve command line arguments: cannot get resolver: error: message="Unauthorized.", type="https://developers.upcloud.com/1.3/errors#ERROR_UNAUTHORIZED", correlation_id=...

Screenshots
N/A

Additional context
N/A

[kangasta]

We check for authentication failed errors, but tokens API uses a different error code so it is not caught here. So I guess we could also check for UNAUTHORIZED there as well 🤔