flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/2102665784dba3f11314e37b4027794ccd324f1d' (2023-06-26)
  → 'github:nix-community/fenix/406286f355ef40b067b79616e1205c93b1f8614d' (2023-09-02)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/4a2ceeff0fb53de168691b0f55d9808d221b867e' (2023-06-25)
  → 'github:rust-lang/rust-analyzer/60182f7043da54e13beaf664c971db5608c1654f' (2023-09-01)
• Updated input 'naersk':
    'github:nix-community/naersk/8507af04eb40c5520bd35d9ce6f9d2342cea5ad1' (2023-06-12)
  → 'github:nix-community/naersk/78789c30d64dea2396c9da516bbcc8db3a475207' (2023-08-18)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/07059ee2fa34f1598758839b9af87eae7f7ae6ea' (2023-06-25)
  → 'github:nixos/nixpkgs/bfb7dfec93f3b5d7274db109f2990bc889861caf' (2023-09-02)