Update dependencies

vendor/tailscale.com/util/sysresources/memory.go

@@ -0,0 +1,10 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package sysresources
+
+// TotalMemory returns the total accessible system memory, in bytes. If the
+// value cannot be determined, then 0 will be returned.
+func TotalMemory() uint64 {
+	return totalMemoryImpl()
+}

vendor/tailscale.com/util/sysresources/memory_bsd.go

@@ -0,0 +1,16 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build freebsd || openbsd || dragonfly || netbsd
+
+package sysresources
+
+import "golang.org/x/sys/unix"
+
+func totalMemoryImpl() uint64 {
+	val, err := unix.SysctlUint64("hw.physmem")
+	if err != nil {
+		return 0
+	}
+	return val
+}

vendor/tailscale.com/util/sysresources/memory_darwin.go

@@ -0,0 +1,16 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build darwin
+
+package sysresources
+
+import "golang.org/x/sys/unix"
+
+func totalMemoryImpl() uint64 {
+	val, err := unix.SysctlUint64("hw.memsize")
+	if err != nil {
+		return 0
+	}
+	return val
+}

vendor/tailscale.com/util/sysresources/memory_linux.go

@@ -0,0 +1,19 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build linux
+
+package sysresources
+
+import "golang.org/x/sys/unix"
+
+func totalMemoryImpl() uint64 {
+	var info unix.Sysinfo_t
+
+	if err := unix.Sysinfo(&info); err != nil {
+		return 0
+	}
+
+	// uint64 casts are required since these might be uint32s
+	return uint64(info.Totalram) * uint64(info.Unit)
+}

vendor/tailscale.com/util/sysresources/memory_unsupported.go

@@ -0,0 +1,8 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build !(linux || darwin || freebsd || openbsd || dragonfly || netbsd)
+
+package sysresources
+
+func totalMemoryImpl() uint64 { return 0 }

vendor/tailscale.com/util/sysresources/sysresources.go

@@ -0,0 +1,6 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+// Package sysresources provides OS-independent methods of determining the
+// resources available to the current system.
+package sysresources