Bump github.com/opencontainers/runc from 1.2.5 to 1.2.6

Bumps [github.com/opencontainers/runc](https://github.com/opencontainers/runc) from 1.2.5 to 1.2.6.
- [Release notes](https://github.com/opencontainers/runc/releases)
- [Changelog](https://github.com/opencontainers/runc/blob/v1.2.6/CHANGELOG.md)
- [Commits](https://github.com/opencontainers/runc/compare/v1.2.5...v1.2.6)

---
updated-dependencies:
- dependency-name: github.com/opencontainers/runc
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/opencontainers/runc/libcontainer/utils/cmsg.go

@@ -42,9 +42,20 @@ func RecvFile(socket *os.File) (_ *os.File, Err error) {
 	oob := make([]byte, oobSpace)
 
 	sockfd := socket.Fd()
-	n, oobn, _, _, err := unix.Recvmsg(int(sockfd), name, oob, unix.MSG_CMSG_CLOEXEC)
+	var (
+		n, oobn int
+		err     error
+	)
+
+	for {
+		n, oobn, _, _, err = unix.Recvmsg(int(sockfd), name, oob, unix.MSG_CMSG_CLOEXEC)
+		if err != unix.EINTR { //nolint:errorlint // unix errors are bare
+			break
+		}
+	}
+
 	if err != nil {
-		return nil, err
+		return nil, os.NewSyscallError("recvmsg", err)
 	}
 	if n >= MaxNameLen || oobn != oobSpace {
 		return nil, fmt.Errorf("recvfile: incorrect number of bytes read (n=%d oobn=%d)", n, oobn)
@@ -115,5 +126,10 @@ func SendFile(socket *os.File, file *os.File) error {
 // SendRawFd sends a specific file descriptor over the given AF_UNIX socket.
 func SendRawFd(socket *os.File, msg string, fd uintptr) error {
 	oob := unix.UnixRights(int(fd))
-	return unix.Sendmsg(int(socket.Fd()), []byte(msg), oob, nil, 0)
+	for {
+		err := unix.Sendmsg(int(socket.Fd()), []byte(msg), oob, nil, 0)
+		if err != unix.EINTR { //nolint:errorlint // unix errors are bare
+			return os.NewSyscallError("sendmsg", err)
+		}
+	}
 }