chore(deps): flake.lock (#2335)

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/2c06f54eb102f325f88472a9713f6d779726c2f7?narHash=sha256-TW68WegsA2KLjQMHTaP2//tLgXSaFiRdZKxKUc7vEtY%3D' (2024-06-30)
  → 'github:nix-community/fenix/0900ff903f376cc822ca637fef58c1ca4f44fab5?narHash=sha256-%2BxR0ZqooQvAjxcpoDBCqiUCKrBK8/RGVffRzlKH7urw%3D' (2024-07-31)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/9463d9eea4b87e651e7d8ed8425a9c92f23b1cdf?narHash=sha256-YzF4P6YVInAjcR5eJHWefkKEu5t70KYVZMvdLODv8CM%3D' (2024-06-28)
  → 'github:rust-lang/rust-analyzer/4feec4b0c1d5aad7aba34e0397fe7bd984c9a634?narHash=sha256-Myc%2BUnbLDQccueeO1q5CF0sNiGebQo1N%2BcdOpDMhNsg%3D' (2024-07-30)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/1e3deb3d8a86a870d925760db1a5adecc64d329d?narHash=sha256-vN5xJAZ4UGREEglh3lfbbkIj%2BMPEYMuqewMn4atZFaQ%3D' (2024-06-27)
  → 'github:NixOS/nixpkgs/c3392ad349a5227f4a3464dce87bcc5046692fce?narHash=sha256-5US0/pgxbMksF92k1%2BeOa8arJTJiPvsdZj9Dl%2BvJkM4%3D' (2024-07-31)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>