Automatically update flake.lock to the latest version

hackage     5f787e9eea (2025-01-27) -> 20ac267ff1 (2025-04-14)
haskell-nix 8d879c1480 (2025-01-24) -> 83d85a5877 (2025-03-27)
stackage    42381991e5 (2025-01-26) -> 8908af37a8 (2025-04-14)

Author: serokell-bot