chore: release v0.6.1

[github-actions]

🤖 New release

• simple-someip: 0.6.0 -> 0.6.1 (✓ API compatible changes)

Changelog

0.6.1 - 2026-04-21

Added

• make std the default feature

Fixed

• gate std-requiring deps behind 'std' feature for true no_std support

Other

• Update docs
• update error handling to use thiserror directly and remove conditional compilation
• run cargo fmt
• remove Display implementations for Error enums in no_std context
• Update CHANGELOG.md
• release v0.5.4

Changed

• std is now the default feature — the crate enables std (with thiserror and tracing) by default. Users targeting no_std environments must set default-features = false in their Cargo.toml.
• thiserror and tracing use default-features = false — both dependencies are always included but their std features are only enabled when the crate's std feature is active. This removes the need for #[cfg(feature = "std")] gating on error types and logging macros.

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