Surface API errors during CLI version checks

[csandanov]

Summary

• check HTTP status before parsing the minimum CLI version
• surface API authorization messages and HTTP fallback errors instead of misleading semver failures
• close version response bodies and trim successful version text
• add regression tests for success, 401 JSON, non-JSON upstream failure, empty responses, and body closure

Validation

• go test ./...
• end-to-end call to api.dev.wodby.com with a placeholder invalid token now reports Unknown authorization token
• git diff --check

Operational note

The failed staging workflow reached the dev API correctly but received HTTP 401. Its WODBY_API_KEY still needs to be replaced with a valid Wodby 1 dev API key.