update flake.lock

Flake lock file updates:

• Updated input 'crane':
    'github:ipetkov/crane/75f7d715f8088f741be9981405f6444e2d49efdd' (2023-06-13)
  → 'github:ipetkov/crane/8b08e96c9af8c6e3a2b69af5a7fa168750fcf88e' (2023-07-07)
• Updated input 'crane/rust-overlay':
    'github:oxalica/rust-overlay/c535b4f3327910c96dcf21851bbdd074d0760290' (2023-06-03)
  → 'github:oxalica/rust-overlay/f9b92316727af9e6c7fee4a761242f7f46880329' (2023-07-03)
• Updated input 'fenix':
    'github:nix-community/fenix/df0a6e4ec44b4a276acfa5a96d2a83cb2dfdc791' (2023-06-17)
  → 'github:nix-community/fenix/39096fe3f379036ff4a5fa198950b8e79defe939' (2023-07-16)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/a5a71c75e62a0eaa1b42a376f7cf3d348cb5dec6' (2023-06-16)
  → 'github:rust-lang/rust-analyzer/996e054f1eb1dbfc8455ecabff0f6ff22ba7f7c8' (2023-07-15)
• Updated input 'flake-utils':
    'github:numtide/flake-utils/a1720a10a6cfe8234c0e93907ffe81be440f4cef' (2023-05-31)
  → 'github:numtide/flake-utils/919d646de7be200f3bf08cb76ae1f09402b6f9b4' (2023-07-11)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/04af42f3b31dba0ef742d254456dc4c14eedac86' (2023-06-17)
  → 'github:NixOS/nixpkgs/8acef304efe70152463a6399f73e636bcc363813' (2023-07-15)