vendor: golang.org/x/net v0.4.0

golang.org/x/net contains a fix for CVE-2022-41717, which was addressed
in stdlib in go1.19.4 and go1.18.9;

> net/http: limit canonical header cache by bytes, not entries
>
> An attacker can cause excessive memory growth in a Go server accepting
> HTTP/2 requests.
>
> HTTP/2 server connections contain a cache of HTTP header keys sent by
> the client. While the total number of entries in this cache is capped,
> an attacker sending very large keys can cause the server to allocate
> approximately 64 MiB per open connection.
>
> This issue is also fixed in golang.org/x/net/http2 v0.4.0,
> for users manually configuring HTTP/2.

full diff: https://github.com/golang/net/compare/v0.2.0...v0.4.0

other dependency updates (due to (circular) dependencies):

- golang.org/x/sys v0.3.0: https://github.com/golang/sys/compare/3c1f35247d10...v0.3.0
- golang.org/x/text v0.5.0: https://github.com/golang/text/compare/v0.3.7...v0.5.0

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

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

@@ -13,8 +13,6 @@ import (
 	"sync"
 	"syscall"
 	"unsafe"
-
-	"golang.org/x/sys/internal/unsafeheader"
 )
 
 var (
@@ -117,11 +115,7 @@ func (m *mmapper) Mmap(fd int, offset int64, length int, prot int, flags int) (d
 	}
 
 	// Use unsafe to convert addr into a []byte.
-	var b []byte
-	hdr := (*unsafeheader.Slice)(unsafe.Pointer(&b))
-	hdr.Data = unsafe.Pointer(addr)
-	hdr.Cap = length
-	hdr.Len = length
+	b := unsafe.Slice((*byte)(unsafe.Pointer(addr)), length)
 
 	// Register mapping in m and return it.
 	p := &b[cap(b)-1]
@@ -429,11 +423,15 @@ func Send(s int, buf []byte, flags int) (err error) {
 }
 
 func Sendto(fd int, p []byte, flags int, to Sockaddr) (err error) {
-	ptr, n, err := to.sockaddr()
-	if err != nil {
-		return err
+	var ptr unsafe.Pointer
+	var salen _Socklen
+	if to != nil {
+		ptr, salen, err = to.sockaddr()
+		if err != nil {
+			return err
+		}
 	}
-	return sendto(fd, p, flags, ptr, n)
+	return sendto(fd, p, flags, ptr, salen)
 }
 
 func SetsockoptByte(fd, level, opt int, value byte) (err error) {