frappix: switch input to blaggacao/frappix (31933b7)

Upstream has the insights mysqlclient fix plus frappe v15.125.0,
erpnext v15.124.3, hrms v15.64.7; the kurogeek fork is no longer needed.

flake.nix

@@ -41,7 +41,7 @@
       flake = false;
     };
     frappix = {
-      url = "github:kurogeek/frappix";
+      url = "github:blaggacao/frappix";
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.devshell.follows = "devshell";
     };