flake.lock: Update
This is needed so that nix-update can update cargo dependencies.
Flake lock file updates:
• Updated input 'nixpkgs':
'github:nixos/nixpkgs/
b1f87ca164a9684404c8829b851c3586c4d9f089' (2023-02-25)
→ 'github:nixos/nixpkgs/
0eeebd64de89e4163f4d3cf34ffe925a5cf67a05' (2023-06-12)
• Updated input 'utils':
'github:numtide/flake-utils/
3db36a8b464d0c4532ba1c7dda728f4576d6d073' (2023-02-13)
→ 'github:numtide/flake-utils/
a1720a10a6cfe8234c0e93907ffe81be440f4cef' (2023-05-31)
• Added input 'utils/systems':
'github:nix-systems/default/
da67096a3b9bf56a91d16901293e51ba5b49a27e' (2023-04-09)