chore(deps): update dependency firefly-iii to v6.1.14

Author: renovate[bot]

flake.nix

@@ -3,7 +3,7 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
     firefly-iii-src = {
-      url = "github:firefly-iii/firefly-iii/v6.1.10";
+      url = "github:firefly-iii/firefly-iii/v6.1.14";
       flake = false;
     };
     composer2nix-src = {