Update vendored deps

vendor/github.com/coreos/go-systemd/LICENSE

vendor/github.com/coreos/go-systemd/daemon/sdnotify.go

vendor/github.com/coreos/go-systemd/daemon/watchdog.go

vendor/golang.org/x/net/context/context.go

vendor/golang.org/x/net/context/go17.go

vendor/golang.org/x/net/context/go19.go

vendor/golang.org/x/net/context/pre_go17.go

vendor/golang.org/x/net/context/pre_go19.go

vendor/golang.org/x/sync/LICENSE

vendor/golang.org/x/sync/PATENTS

vendor/golang.org/x/sync/singleflight/singleflight.go

vendor/vendor.json