Update flake.lock (#12063)

flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/6ffcbf59c119b0c6384c7d98f18cea06a9af7e9c?narHash=sha256-J/rtMKVUAEqOFj0ogvcHKK8HbaKhw%2BtiNrDOpEM%2BZDY%3D' (2025-10-04)
  → 'github:nix-community/fenix/2579f163559b902959cc420a6d3bfbd98c46a323?narHash=sha256-yxcfwZCysR6zPaFv7is3/FWd1h0h6kXME0vueSwTBhU%3D' (2025-10-11)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/472037b789cf593172d6adf3b8d9f7a429f6cd9b?narHash=sha256-7StxDed3v2fAWLkl%2BHse9FlpjT7Dk7Cn/4vxTFyEhIg%3D' (2025-10-01)
  → 'github:rust-lang/rust-analyzer/b93180b4f2cb3c81ac7f17f46e3dfcb30ecc7843?narHash=sha256-XGkBjf4Dzg6tXd0KGgKzeW4oVX/iLzLhD3rQ1cATpqM%3D' (2025-10-10)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/27ac93958969b5f3dccd654b402599cf3de633ac?narHash=sha256-hhM8SUI6kQMei5TImFdNQy9EDT8g2hAD161DUtbfAy0%3D' (2025-10-04)
  → 'github:NixOS/nixpkgs/870493f9a8cb0b074ae5b411b2f232015db19a65?narHash=sha256-BMsGVfKl4Q80Pr9T1AkCRljO1bpwCmY8rTBVj8XGuhA%3D' (2025-10-10)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]