Pin crane dep in nix flake

After the pinned commit crane updated to no longer accept the
--exclude-lockfile as it is deprecated for --exclude. However some deps
seem to pass this flag themselves at the install phase forcing an error
in the flake check.

You can view a failure here https://github.com/payjoin/rust-payjoin/actions/runs/22304307414/job/64519589244#step:4:9457

Author: benalleng

flake.nix

@@ -8,7 +8,9 @@
       url = "github:oxalica/rust-overlay";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    crane.url = "github:ipetkov/crane";
+    crane = {
+      url = "github:ipetkov/crane/2510f2cbc3ccd237f700bb213756a8f35c32d8d7";
+    };
     treefmt-nix = {
       url = "github:numtide/treefmt-nix";
       inputs.nixpkgs.follows = "nixpkgs";