Security update for cosign

This update for cosign fixes the following issues: Update to version 3.0.5 jscSLE-23879. Security issues fixed: CVE-2025-11065: github.com/go-viper/mapstructure/v2: sensitive Information leak in logs bsc1250620. CVE-2025-58181: golang.org/x/crypto/ssh: invalidated number of mechanisms can cause...