Security update for go1.26

This update for go1.26 fixes the following issues: Update to go1.26.1 bsc1255111: CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. CVE-2026-27137: crypto/x509: incorrect enforcement of email constraints bsc1259266. CVE-2026-27138: crypto/x509: panic in name constraint...