chore(lint): bump linter from v2.4.0 to v2.11.4

internal/pmtud/icmp/df_linux.go

@@ -5,10 +5,11 @@ import (
 )
 
 func setDontFragment(fd uintptr, ipv4 bool) (err error) {
+	fdInt := int(fd) //nolint:gosec
 	if ipv4 {
-		return unix.SetsockoptInt(int(fd), unix.IPPROTO_IP,
+		return unix.SetsockoptInt(fdInt, unix.IPPROTO_IP,
 			unix.IP_MTU_DISCOVER, unix.IP_PMTUDISC_PROBE)
 	}
-	return unix.SetsockoptInt(int(fd), unix.IPPROTO_IPV6,
+	return unix.SetsockoptInt(fdInt, unix.IPPROTO_IPV6,
 		unix.IPV6_MTU_DISCOVER, unix.IPV6_PMTUDISC_PROBE)
 }

internal/pmtud/ip/ipheader.go

@@ -52,7 +52,7 @@ func ipChecksum(header []byte) uint16 {
 	for (sum >> 16) > 0 {
 		sum = (sum & 0xFFFF) + (sum >> 16)
 	}
-	return ^uint16(sum) //nolint:gosec
+	return ^uint16(sum)
 }
 
 // HeaderV6 makes an IPv6 header.

internal/pmtud/tcp/tcpheader.go

@@ -58,7 +58,7 @@ func tcpChecksum(ipHeader, tcpHeader, payload []byte) uint16 {
 	for (sum >> 16) > 0 {
 		sum = (sum & 0xFFFF) + (sum >> 16)
 	}
-	return ^uint16(sum) //nolint:gosec
+	return ^uint16(sum)
 }
 
 const (