Add andehen to maintainers list

maintainers/maintainer-list.nix

@@ -466,6 +466,12 @@
     githubId = 858965;
     name = "Andrew Morsillo";
   };
+  andehen = {
+    email = "git@andehen.net";
+    github = "andehen";
+    githubId = 754494;
+    name = "Anders Asheim Hennum";
+  };
   andersk = {
     email = "andersk@mit.edu";
     github = "andersk";