flake.lock: Update

Flake lock file updates:

• Updated input 'sandkasten':
    'github:Defelo/sandkasten/e7a9f6e767c6f1f8c10169135ecb37318774d7c3' (2024-07-24)
  → 'github:Defelo/sandkasten/2a76c65250f29fb7a11dfa4d7e20c729be24d3ea' (2024-07-30)
• Updated input 'sandkasten/fenix':
    'github:nix-community/fenix/1270fb024c6987dd825a20cd27319384a8d8569e' (2024-07-22)
  → 'github:nix-community/fenix/3717a9f4981495d5487642554343acfacf4e64fa' (2024-07-27)
• Updated input 'sandkasten/fenix/nixpkgs':
    'github:nixos/nixpkgs/1d9c2c9b3e71b9ee663d11c5d298727dace8d374' (2024-07-19)
  → 'github:nixos/nixpkgs/5ad6a14c6bf098e98800b091668718c336effc95' (2024-07-25)
• Updated input 'sandkasten/fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/4afe0d5393cdedde58881295752fe68acb3148ae' (2024-07-21)
  → 'github:rust-lang/rust-analyzer/aae54dde8c384acc310455504c9d8909646e0778' (2024-07-26)
• Updated input 'sandkasten/nixpkgs':
    'github:NixOS/nixpkgs/a6de15650ccd52e749696e7324b19611a32b0aa1' (2024-07-22)
  → 'github:NixOS/nixpkgs/ccf6b3356b0c418b6a6cf76cf511781dfe603a2c' (2024-07-27)
• Updated input 'sandkasten/nixpkgs-master':
    'github:NixOS/nixpkgs/0bf815b4fc91e03d7247e9a21740678b1fac961d' (2024-07-22)
  → 'github:NixOS/nixpkgs/cc973ae8bb6b6e972878b1f33e3ef0839a9d5a78' (2024-07-28)

Author: Defelo