Update dependencies

vendor/git.autistici.org/ai3/go-common/clientutil/json.go

vendor/git.autistici.org/ai3/go-common/clientutil/retry.go

...r/git.autistici.org/ai3/go-common/clientutil/transport.go

vendor/git.autistici.org/id/auth/README.md

vendor/git.autistici.org/id/auth/test-config.yml

vendor/git.autistici.org/id/auth/test-users.yml

vendor/golang.org/x/sys/unix/mkpost.go

vendor/golang.org/x/sys/unix/types_darwin.go

vendor/golang.org/x/sys/unix/types_dragonfly.go

vendor/golang.org/x/sys/unix/types_freebsd.go

vendor/golang.org/x/sys/unix/types_netbsd.go

vendor/golang.org/x/sys/unix/types_openbsd.go

vendor/golang.org/x/sys/unix/types_solaris.go

vendor/vendor.json