flake.lock: Update

Flake lock file updates:

• Updated input 'hyprland':
    'github:hyprwm/Hyprland/097f561e41e5660333492c1f188199e837742efe' (2024-02-28)
  → 'github:hyprwm/Hyprland/1e7eb3a5a5419f97b61a3403880b161c85dd7b17' (2024-02-28)
• Updated input 'nixvim':
    'github:nix-community/nixvim/8bb460e261dd0fd8ac3f544f8a2a28ad64616cbe' (2024-02-28)
  → 'github:nix-community/nixvim/be87309e0c1da19d99d969625300aaed36ff1b91' (2024-02-28)
• Updated input 'nur':
    'github:nix-community/NUR/fc9e8ef9cea57baa3669766b78e3236207df39ba' (2024-02-28)
  → 'github:nix-community/NUR/29baed9ccb889e9bb0eaf51dab3a5fcdd247d3e7' (2024-02-28)