update nix flake

Author: Cmdv

cabal.project

@@ -11,7 +11,7 @@ repository cardano-haskell-packages
 
 index-state:
   , hackage.haskell.org 2025-08-03T21:32:16Z
-  , cardano-haskell-packages 2025-07-30T14:13:57Z
+  , cardano-haskell-packages 2025-06-25T13:51:34Z
 
 packages:
   cardano-db