chore(nix): Update inputs

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/08b9151ed40350725eb40b1fe96b0b86304a654b'
(2024-04-03)
  → 'github:nixos/nixpkgs/062ca2a9370a27a35c524dc82d540e6e9824b652'
(2024-05-11)
• Updated input 'rust-overlay':

'github:oxalica/rust-overlay/6d3c6e185198b8bf7ad639f22404a75aa9a09bff'
(2023-11-30)
  →
'github:oxalica/rust-overlay/d690205a4f01ec0930303c4204e5063958e51255'
(2024-05-12)
• Updated input 'rust-overlay/flake-utils':

'github:numtide/flake-utils/cfacdce06f30d2b68473a46042957675eebb3401'
(2023-04-11)
  →
'github:numtide/flake-utils/1ef2e671c3b0c19053962c07dbda38332dcebf26'
(2024-01-15)
• Updated input 'rust-overlay/nixpkgs':
    'github:NixOS/nixpkgs/96ba1c52e54e74c3197f4d43026b3f3d92e83ff9'
(2023-04-13)
  → 'github:NixOS/nixpkgs/90f456026d284c22b3e3497be980b2e47d0b28ac'
(2024-01-29)