flake.lock: Update

Flake lock file updates:

• Updated input 'agenix':
    'github:ryantm/agenix/1381a759b205dff7a6818733118d02253340fd5e?narHash=sha256-/JdiT9t%2BzzjChc5qQiF%2BjhrVhRt8figYH29rZO7pFe4%3D' (2024-04-02)
  → 'github:ryantm/agenix/24a7ea390564ccd5b39b7884f597cfc8d7f6f44e?narHash=sha256-BtWQ2Th/jamO1SlD%2B2ASSW5Jaf7JhA/JLpQHk0Goqpg%3D' (2024-04-26)
• Updated input 'home-manager':
    'github:nix-community/home-manager/d6bb9f934f2870e5cbc5b94c79e9db22246141ff?narHash=sha256-dA82pOMQNnCJMAsPG7AXG35VmCSMZsJHTFlTHizpKWQ%3D' (2024-04-06)
  → 'github:nix-community/home-manager/86853e31dc1b62c6eeed11c667e8cdd0285d4411?narHash=sha256-Xn2r0Jv95TswvPlvamCC46wwNo8ALjRCMBJbGykdhcM%3D' (2024-04-25)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/51651a540816273b67bc4dedea2d37d116c5f7fe?narHash=sha256-edTFV4KldkCMdViC/rmpJa7oLIU8SE/S35lh/ukC7bg%3D' (2024-04-11)
  → 'github:NixOS/nixpkgs/dd37924974b9202f8226ed5d74a252a9785aedf8?narHash=sha256-fFE3M0vCoiSwCX02z8VF58jXFRj9enYUSTqjyHAjrds%3D' (2024-04-24)
• Updated input 'nixpkgs-unstable':
    'github:NixOS/nixpkgs/1b691969594504eabec53a11a366acf1c75387d1?narHash=sha256-iw3O6mVc%2BJx7UZMnIWyzuIc0x7xN5RY0oxZ4gbFY5wU%3D' (2024-04-13)
  → 'github:NixOS/nixpkgs/a2acec635dd260d8bfeb7c178f17c75d70056ac5?narHash=sha256-c8THg3DZD1uTqrX5sXIOF0V0b0PQbRgfpV4EsghZJzM%3D' (2024-04-28)
• Updated input 'nur':
    'github:nix-community/NUR/51cab5c3aaf90ff4511a63962715e45cd7ee2f15?narHash=sha256-0p8h0MALnsJSF6%2BZxvwcqsm6E91Dr350FdKzLSHG%2B6k%3D' (2024-04-14)
  → 'github:nix-community/NUR/1def883444a9bf8d2863558fda1f15910f43c7ce?narHash=sha256-OIs8D5aNGgQlBbOXDSVw8hK%2Bc1iyPrpAwIgs9/k%2BdN4%3D' (2024-04-27)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/a497535d074432133b683dda3a1faa8c8ab587ad?narHash=sha256-ZJxC6t2K0UAPW%2BlV%2BbJ%2BpAtwbn29eqZQzXLTG54oL%2BI%3D' (2024-04-13)
  → 'github:oxalica/rust-overlay/2a42c742ab04b61d9b2f1edf392842cf9f27ebfd?narHash=sha256-044xbpBszupqN3nl/CGOCJtTQ4O6Aca81mJpX45i8/I%3D' (2024-04-26)