flake.lock: Update (#985)

Flake lock file updates:

• Updated input 'nixos-infra':
    'github:NixOS/infra/7ee3f5c95beda825b742580178f84034ec48aa9c?narHash=sha256-gUIUMsehdlB/8WKLOUTNwG1OZ/2bO7bAdmiPhHoJmns%3D' (2025-07-24)
  → 'github:NixOS/infra/5d020952f5b870ff323904035347cd768530617d?narHash=sha256-cqFey6532UNqjDCNE9MqW/lnOViYgrlFBq9BT1ewfl8%3D' (2025-08-09)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/7fd36ee82c0275fb545775cc5e4d30542899511d?narHash=sha256-9h7%2B4/53cSfQ/uA3pSvCaBepmZaz/dLlLVJnbQ%2BSJjk%3D' (2025-07-25)
  → 'github:NixOS/nixpkgs/c2ae88e026f9525daf89587f3cbee584b92b6134?narHash=sha256-erbiH2agUTD0Z30xcVSFcDHzkRvkRXOQ3lb887bcVrs%3D' (2025-08-06)

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

Author: github-actions[bot]