flake.lock: Update

Flake lock file updates:

• Updated input 'agenix':
    'github:ryantm/agenix/f6291c5935fdc4e0bef208cfc0dcab7e3f7a1c41?narHash=sha256-b%2Buqzj%2BWa6xgMS9aNbX4I%2BsXeb5biPDi39VgvSFqFvU%3D' (2024-08-10)
  → 'github:ryantm/agenix/e600439ec4c273cf11e06fe4d9d906fb98fa097c?narHash=sha256-uenf8fv2eG5bKM8C/UvFaiJMZ4IpUFaQxk9OH5t/1gA%3D' (2025-01-15)
• Updated input 'nixos-hardware':
    'github:NixOS/nixos-hardware/8870dcaff63dfc6647fb10648b827e9d40b0a337?narHash=sha256-OL7leZ6KBhcDF3nEKe4aZVfIm6xQpb1Kb%2BmxySIP93o%3D' (2025-01-09)
  → 'github:NixOS/nixos-hardware/61c79181e77ef774ab0468b28a24bc2647d498d6?narHash=sha256-utplyRM6pqnN940gfaLFBb9oUCSzkan86IvmkhsVlN8%3D' (2025-01-20)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/357cd3dfdb8993af11268d755d53357720675e66?narHash=sha256-9B6fQqphF3j9lpcxQnKyIUgp3NyGi7ikb9CjCYqixcY%3D' (2025-01-14)
  → 'github:NixOS/nixpkgs/aa6ae0afa6adeb5c202a168e51eda1d3da571117?narHash=sha256-6QqSrHPN%2BZD%2B7HuadVLuFNUaM8XnmZF3EO7QViM1b80%3D' (2025-01-19)