kanidm: permit hydra to build unmaintained 1.3 release

Building kanidm can take a non-trivial amount of time and compute resources.
We don't have any evidence of vulnerabilities and only marked it insecure
due to upstream dropping support

pkgs/top-level/release.nix

@@ -35,6 +35,7 @@
     # so users choosing to allow don't have to rebuild them every time.
     permittedInsecurePackages = [
       "olm-3.2.16" # see PR #347899
+      "kanidm_1_3-1.3.3"
     ];
   }; }