chore: removing rust-toolchain.toml

[helio-frota]

Summary by Sourcery

Remove the Rust toolchain configuration file from the repository.

Build:

• Stop tracking the rust-toolchain.toml file so local toolchain selection is no longer enforced by the repo.

Chores:

• Clean up obsolete Rust tooling configuration by deleting rust-toolchain.toml.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR deletes the rust-toolchain.toml file from the repository, removing any repository-pinned Rust toolchain configuration so that Rust version and components are determined by the environment or other tooling instead.

File-Level Changes

Change	Details	Files
Remove the repository-pinned Rust toolchain configuration file so rustup/cargo no longer use a project-specific toolchain definition.	Delete rust-toolchain.toml from the project root Rely on developer or CI default Rust toolchain configuration instead of a checked-in override	rust-toolchain.toml

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.73%. Comparing base (56ee049) to head (91098f2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2218      +/-   ##
==========================================
- Coverage   68.74%   68.73%   -0.01%     
==========================================
  Files         397      397              
  Lines       22322    22322              
  Branches    22322    22322              
==========================================
- Hits        15346    15344       -2     
+ Misses       6070     6068       -2     
- Partials      906      910       +4     

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[ctron]

I think in addition, we should set the minimum supported Rust version. This needs to be done for every project, but can be controlled via the workspace. Like this:

• https://github.com/scm-rs/csaf-walker/blob/main/Cargo.toml#L15
• https://github.com/scm-rs/csaf-walker/blob/main/common/Cargo.toml#L12

[helio-frota]

Pr updated