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/b678606690027913f3434dea3864e712b862dde5?narHash=sha256-oMr3PVIQ8XPDI8/x6BHxsWEPBRU98Pam6KGVwUh8MPk%3D' (2025-01-15)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/357cd3dfdb8993af11268d755d53357720675e66?narHash=sha256-9B6fQqphF3j9lpcxQnKyIUgp3NyGi7ikb9CjCYqixcY%3D' (2025-01-14)
  → 'github:NixOS/nixpkgs/ae2fb9f1fb5fcf17fb59f25c2a881c170c501d6f?narHash=sha256-BYsp8PA1j691FupfrLVOQzm4CaYaKtkh4U%2BKuGMnBWw%3D' (2025-01-15)