Update vendor directory

vendor/golang.org/x/sys/unix/mkerrors.sh

@@ -128,6 +128,7 @@ includes_Linux='
 #include <linux/wait.h>
 #include <linux/icmpv6.h>
 #include <linux/serial.h>
+#include <linux/can.h>
 #include <net/route.h>
 #include <asm/termbits.h>
 
@@ -339,6 +340,7 @@ ccflags="$@"
 		$2 !~ /^(BPF_TIMEVAL)$/ &&
 		$2 ~ /^(BPF|DLT)_/ ||
 		$2 ~ /^CLOCK_/ ||
+		$2 ~ /^CAN_/ ||
 		$2 !~ "WMESGLEN" &&
 		$2 ~ /^W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", $2, $2)}
 		$2 ~ /^__WCOREFLAG$/ {next}