fix auth; update deps

vendor/modernc.org/libc/mem_brk_musl.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build libc.membrk && !libc.memgrind && linux && (amd64 || loong64)
+//go:build libc.membrk && !libc.memgrind && linux && (amd64 || arm64 || loong64)
 
 // This is a debug-only version of the memory handling functions. When a
 // program is built with -tags=libc.membrk a simple but safe version of malloc
@@ -12,7 +12,7 @@
 // The fixed heap is initially filled with random bytes from a full cycle PRNG,
 // program startup time is substantially prolonged.
 
-package libc // import "modernc.org/libc/v2"
+package libc // import "modernc.org/libc"
 
 import (
 	"fmt"
@@ -27,6 +27,7 @@ import (
 )
 
 const (
+	memgrind = false
 	isMemBrk = true
 
 	heapSize = 1 << 30