lang/go126: Update to 1.26.2
Changes:
go1.26.2 (released 2026-04-07) includes security fixes to the go command, the compiler, and the archive/tar, crypto/tls, crypto/x509, html/template, and os packages, as well as bug fixes to the go command, the go fix command, the compiler, the linker, the runtime, and the net, net/http, and net/url packages. See the Go 1.26.2 milestone on our issue tracker for details.
PR: 294339
MFH: 2026Q2