maintainers: add gfrascadorio

Added new entry to maintainers
Fixed new retry package to cite new maintainer

maintainers/maintainer-list.nix

···
     githubId = 10353047;
     name = "Tobias Happ";
   };
+  gfrascadorio = {
+    email = "[e-mail]";
+    github = "gfrascadorio";
+    githubId = 37602871;
+    name = "Galois";
+  };
   ggpeti = {
     email = "[e-mail]";
     github = "ggpeti";

pkgs/tools/system/retry/default.nix

···
     description = "Retry a command until the command succeeds";
     platforms = platforms.all;
     license = licenses.asl20;
-    # maintainers = with maintainers; [ gfrascadorio ];
+    maintainers = with maintainers; [ gfrascadorio ];
   };
 }