maintainers: add panda2134

maintainers/maintainer-list.nix

···
     githubId = 686076;
     name = "Vitalii Voloshyn";
   };
+  panda2134 = {
+    email = "[e-mail]";
+    github = "panda2134";
+    githubId = 7239200;
+    name = "panda2134";
+  };
   pandaman = {
     email = "[e-mail]";
     github = "pandaman64";