Security update for go1.25

Open Source Vulnerabilities openSUSE-SU-2026:20085-1

This update for go1.25 fixes the following issues: Update to go1.25.6 (released 2026-01-15) (bsc#1244485) Security fixes: - CVE-2025-61730: crypto/tls: handshake messages may be processed at the incorrect encryption level (bsc#1256821). - CVE-2025-68119: cmd/go: unexpected code execution when invoking toolchain (bsc#1256820). - CVE-2025-61731: cmd/go: bypass of flag sanitization can lead to arbitrary code execution (bsc#1256819). - CVE-2025-61726: net/http: memory exhaustion in Request.ParseForm (bsc#1256817). - CVE-2025-61728: archive/zip: denial of service when parsing arbitrary ZIP archives (bsc#1256816). - CVE-2025-68121: crypto/tls: Config.Clone copies automatically generated session ticket keys, session resumption does not account for the expiration of full certificate chain (bsc#1256818). Other fixes: * go#76392 os: package initialization hangs is Stdin is blocked * go#76409 crypto/tls: earlyTrafficSecret should use ClientHelloInner if ECH enabled * go#76620 os: on Unix, Readdirnames skips directory entries with zero inodes * go#76761 runtime: stack split at bad time in os/signal with Go 1.25.4 windows 386 * go#76776 runtime: race detector crash on ppc64le * go#76967 cmd/compile/internal/ssa: Compile.func1(): panic during sccp while compiling <function>: runtime error: index out of range * go#76973 errors: errors.Join behavior changed in 1.25