seccomp-util: add new syscalls from kernel 5.6 to syscall filter table

src/shared/seccomp-util.c

@@ -384,6 +384,7 @@ const SyscallFilterSet syscall_filter_sets[_SYSCALL_FILTER_SET_MAX] = {
                 .value =
                 "lookup_dcookie\0"
                 "perf_event_open\0"
+                "pidfd_getfd\0"
                 "ptrace\0"
                 "rtas\0"
 #ifdef __NR_s390_runtime_instr
@@ -449,6 +450,7 @@ const SyscallFilterSet syscall_filter_sets[_SYSCALL_FILTER_SET_MAX] = {
                 "oldstat\0"
                 "open\0"
                 "openat\0"
+                "openat2\0"
                 "readlink\0"
                 "readlinkat\0"
                 "removexattr\0"