build(nix): update flake lock

[enarx-bot[bot]]

Updated Inputs

• __fenix_3: github:nix-community/fenix/1a3e0f661119a7435099b118912d65bdbbf3bb11 → github:nix-community/fenix/688951d4944e60a4ff212714459206071d49757f (view changes)__
• __nixpkgs_4: github:nixos/nixpkgs/7409480d5c8584a1a83c422530419efe4afb0d19 → github:nixos/nixpkgs/4729ffac6fd12e26e5a8de002781ffc49b0e94b7 (view changes)__
• __rust-analyzer-src_3: github:rust-lang/rust-analyzer/d42d55feaafa71e14521bbfe6e7011fbb41980f0 → github:rust-lang/rust-analyzer/91579277723bfd7ed2cd32b81a90eae78d8c9163 (view changes)__