devel/etcd36: Update to 3.6.5
Also, mark as NOT_FOR_ARCHS=aarch64 due to the following error:
===> Fetching go.etcd.io/etcd/v3 dependencies go: downloading go1.23.8 (freebsd/arm64) go: download go1.23.8: Lock /home/freebsd-ports/distfiles/go/devel_etcd36/pkg/mod/cache/download/golang.org/toolchain/@v/v0.0.1-go1.23.8.freebsd-arm64.lock: no locks available
Reported by: Eirik Øverby
Sponsored by: Entersekt