build: upgrade rust version and packages (#19)

* build: upgrade rust version and packages

* ci: bump code cov action

* docs: update documentation with rust version

Author: Logic-py

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
 
       - run: cargo llvm-cov --all-features --lcov --output-path lcov.info
 
-      - uses: codecov/codecov-action@v5
+      - uses: codecov/codecov-action@v6
         with:
           files: lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}

CONTRIBUTING.md

@@ -4,7 +4,7 @@ Thank you for your interest in contributing to pycu!
 
 ## Prerequisites
 
-- [Rust](https://rustup.rs) **1.85 or later** (stable toolchain - edition 2024)
+- [Rust](https://rustup.rs) **1.94.1 or later** (stable toolchain - edition 2024)
 - `rustfmt` and `clippy` components:
 
   ```sh