Kali 2021 snap-confine has elevated permissions and is not confined but should be. Refusing to continue to avoid permission escalation attacks

snapd
4

From the first log:

openat(AT_FDCWD, "/proc/11547/attr/current", O_RDONLY) = 4
read(4, "unconfined\n", 128)            = 11

Clearly indicates that there is no apparmor profile for snap-confine in the kernel. You probably need to run systemctl enable --now apparmor.service.

Then the next log:

openat(AT_FDCWD, "/proc/11709/attr/exec", O_WRONLY) = 4
write(4, "exec snap.webstorm.webstorm", 27) = -1 ENOENT (Aucun fichier ou dossier de ce type)
close(4)                                = 0
write(2, "cannot change profile for the next exec call", 44cannot change profile for the next exec call) = 44
write(2, ": No such file or directory\n", 28: No such file or directory

You probably need to run systemctl enable --now snapd.apparmor.service

This was fixed in Sid some time ago and AFAIU the fixes were imported to Kali.