Fixing workflow experimental - #44

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, giraffate/clippy-action@v1. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

[clippy] reported by reviewdog 🐶 warning: unused variable: `x` --> application/src/main.rs:35:9 | 35 | let x: u32 = 0; | ^ help: if this is intentional, prefix it with an underscore: `_x` | = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default Raw Output: application/src/main.rs:35:9:w:warning: unused variable: `x` --> application/src/main.rs:35:9 | 35 | let x: u32 = 0; | ^ help: if this is intentional, prefix it with an underscore: `_x` | = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default __END__