hacky test: try to point bumped git2-rs branch instead of beta-1 to t…

…est build

milestones.nix

@@ -7,7 +7,7 @@
   beta-1 = {
     forc-wallet = "9473052e88048f58e8c4e1eba0ff88ef6a4cdd59";
     fuel-core = "a0351c241754f670470cbf0aa5bb743582b038d1";
-    sway = "e7674f704f2706e22f77c0ed32df9c89302e5e7e";
+    sway = "55a6911624b1ac1ba338e651e1004627edb5cc20";
   };
 
   # Commits sourced from: