build(nix): update flake lock

[enarx-bot[bot]]

Updated Inputs

• __fenix_3: github:nix-community/fenix/75b8b8463ed9a41dc446c109ce6d615d15dff571 → github:nix-community/fenix/6fbeedcd2fc1fba77152e13fd7492824d77a4060 (view changes)__
• __nixpkgs_4: github:nixos/nixpkgs/21951114383770f96ae528d0ae68824557768e81 → github:nixos/nixpkgs/75a5ebf473cd60148ba9aec0d219f72e5cf52519 (view changes)__
• __rust-analyzer-src_3: github:rust-lang/rust-analyzer/d567091f472a6c2b55262e25d092f1d43a7a4fae → github:rust-lang/rust-analyzer/1f1fe81f0db301124b3026bd2940294526cdd852 (view changes)__