Update flake inputs (#156)

Updated Flake dependencies through `nix flake update`.

```
Resolved URL:  git+file:///home/runner/work/ragenix/ragenix?shallow=1
Locked URL:    git+file:///home/runner/work/ragenix/ragenix?ref=refs/heads/main&rev=34e459bfea34dc10aaae35a31d7ef0f82a5c4a20&shallow=1
Description:   A rust drop-in replacement for agenix
Path:          /nix/store/2z6zs4mngscxfnbww46n6iqgz47j21sp-source
Revision:      34e459b
Last modified: 2025-08-31 02:31:44
Inputs:
├───agenix: github:ryantm/agenix/9edb1787864c4f59ae5074ad498b6272b3ec308d (2025-08-05 22:37:08)
│   ├───darwin: github:lnl7/nix-darwin/43975d782b418ebf4969e9ccba82466728c2851b (2025-04-12 17:29:39)
│   │   └───nixpkgs follows input 'agenix/nixpkgs'
│   ├───home-manager: github:nix-community/home-manager/abfad3d2958c9e6300a883bd443512c55dfeb1be (2025-04-24 11:40:11)
│   │   └───nixpkgs follows input 'agenix/nixpkgs'
│   ├───nixpkgs follows input 'nixpkgs'
│   └───systems: github:nix-systems/default/da67096a3b9bf56a91d16901293e51ba5b49a27e (2023-04-09 08:27:08)
├───crane: github:ipetkov/crane/25bd41b24426c7734278c2ff02e53258851db914 (2025-08-23 23:55:54)
├───flake-utils: github:numtide/flake-utils/11707dc2f618dd54ca8739b309ec4fc024de578b (2024-11-13 21:27:16)
│   └───systems: github:nix-systems/default/da67096a3b9bf56a91d16901293e51ba5b49a27e (2023-04-09 08:27:08)
├───nixpkgs: github:nixos/nixpkgs/d7600c775f877cd87b4f5a831c28aa94137377aa (2025-08-30 08:25:00)
└───rust-overlay: github:oxalica/rust-overlay/2243e3f251ea18486f83133cf8e325d2b9b71e89 (2025-08-30 02:31:52)
    └───nixpkgs follows input 'nixpkgs'

```

Updated Cargo dependencies through `cargo update`.

Dependency status of `main` prior to this PR:
[![dependency
status](https://deps.rs/repo/github/yaxitech/ragenix/status.svg)
](https://deps.rs/repo/github/yaxitech/ragenix)

---------

Co-authored-by: Vincent Haupert <[email protected]>

Author: wurzelpfropf