This update for go1.25 fixes the following issues:
go1.25.3 (released 2025-10-13) includes fixes to the crypto/x509 package. (bsc#1244485 CVE-2025-58187)
go#75777 spec: Go1.25 spec should be dated closer to actual release date
Further fixups to the fix for net/url allowing IP literals with IPv4 mapped IPv6 addresses.