update nixpkgs-unstable-small

this includes the fix for a remote code excecution as root
 https://github.com/NixOS/nixpkgs/pull/323761
 (probably CVE-2024-6387)

annoyingly it did not bump the version number (to check that the fix
is indeed there, one has to check wich patches are applied).

it also adds nextcloud to the permitteed insecure packages because we
again didn't update it in time (in fairness, it is also broken).

fun irony!

flake.lock

@@ -89,11 +89,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1719176307,
-        "narHash": "sha256-r8eUJqKlq2xQmK95s1Q9+OwV6Py/pPbDN8T6V4GLP8E=",
+        "lastModified": 1719825363,
+        "narHash": "sha256-2ASBatUTQWNIiTeBZRuxROu27MyOavVnzeCv7h40QNw=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5defcb4b0d6c286e8b4b2869cf38efb4cdeb5bf4",
+        "rev": "10c832d0548e9e3a6df7eb51e68c2783212a303e",
         "type": "github"
       },
       "original": {

flake.nix

@@ -38,6 +38,7 @@
           sources = inputs;
           system = "x86_64-linux";
           config.allowUnfree = true;
+          config.permittedInsecurePackages = [ "nextcloud-27.1.11" ];
         };
     in {
       nixosConfigurations.parsons = nixpkgs.lib.nixosSystem {