chore: update dependencies and version to 0.3.0

[ZR233]

No description provided.

[Copilot]

Pull request overview

This PR performs a routine maintenance update, bumping the crate version to 0.3.0 and updating the axerrno dependency from version 0.1 to 0.2. The update introduces new transitive dependencies (strum, strum_macros, and heck) that are used by the newer version of axerrno.

Changes:

• Bumped package version from 0.2.0 to 0.3.0
• Updated axerrno dependency from 0.1 to 0.2
• Updated Cargo.lock with new dependency versions and transitive dependencies

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
Cargo.toml	Updated package version to 0.3.0 and axerrno dependency to 0.2
Cargo.lock	Regenerated lock file with updated axerrno 0.2.2 and new transitive dependencies (strum, strum_macros, heck)

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