add age-plugin-fido2-hmac as age-plugins

machines/default.nix

@@ -6,7 +6,10 @@
   clan = {
     meta.name = "NewEdgeClan";
     machines = { };
-    secrets.age.plugins = [ "age-plugin-yubikey" ];
+    secrets.age.plugins = [
+      "age-plugin-yubikey"
+      "age-plugin-fido2-hmac"
+    ];
     specialArgs = { inherit inputs self; };
     inherit self;
   };