nixos/paperless: add required syscall

`unpaper` requires syscall 238 (`set_mempolicy`).
Add this by un-blocking the systemd syscall filter set `@resources`
which is safe in the context of paperless.

Changed files
+1 -1
nixos
modules
services
+1 -1
nixos/modules/services/misc/paperless.nix
···
RestrictSUIDSGID = true;
SupplementaryGroups = optional enableRedis redisServer.user;
SystemCallArchitectures = "native";
-
SystemCallFilter = [ "@system-service" "~@privileged @resources @setuid @keyring" ];
+
SystemCallFilter = [ "@system-service" "~@privileged @setuid @keyring" ];
# Does not work well with the temporary root
#UMask = "0066";
};