seccomp: Add pidfd_getfd syscall

Signed-off-by: Mark Vainomaa <mikroskeem@mikroskeem.eu>

profiles/seccomp/default.json

@@ -723,6 +723,7 @@
 		{
 			"names": [
 				"kcmp",
+				"pidfd_getfd",
 				"process_vm_readv",
 				"process_vm_writev",
 				"ptrace"

profiles/seccomp/default_linux.go

@@ -624,6 +624,7 @@ func DefaultProfile() *Seccomp {
 		{
 			Names: []string{
 				"kcmp",
+				"pidfd_getfd",
 				"process_vm_readv",
 				"process_vm_writev",
 				"ptrace",