flake.lock: Update

Flake lock file updates:

• Updated input 'emacs-overlay':
    'github:nix-community/emacs-overlay/370a91d' (2026-05-14)
  → 'github:nix-community/emacs-overlay/77a66f3' (2026-06-16)
• Updated input 'emacs-overlay/nixpkgs-stable':
    'github:NixOS/nixpkgs/8fd9daa' (2026-05-10)
  → 'github:NixOS/nixpkgs/a037402' (2026-06-11)
• Updated input 'home-manager':
    'github:nix-community/home-manager/9846abe' (2026-05-15)
  → 'github:nix-community/home-manager/df4e046' (2026-06-16)
• Updated input 'nix-darwin':
    'github:LnL7/nix-darwin/8c62fba' (2026-05-03)
  → 'github:LnL7/nix-darwin/aabb203' (2026-06-12)
• Updated input 'nixos-wsl':
    'github:nix-community/NixOS-WSL/5482f11' (2026-05-02)
  → 'github:nix-community/NixOS-WSL/5675822' (2026-06-11)
• Updated input 'nixos-wsl/nixpkgs':
    'github:NixOS/nixpkgs/4bd9165' (2026-04-14)
  → 'github:NixOS/nixpkgs/331800d' (2026-05-31)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/da5ad66' (2026-05-10)
  → 'github:nixos/nixpkgs/567a49d' (2026-06-16)

Author: github-actions[bot]