build: update dependencies & bump to 0.6.1

[AsakuraMizu]

No description provided.

[Copilot]

Pull request overview

This PR bumps the workspace version to 0.6.1 and refreshes a couple of architecture-specific Rust dependencies used by the page_table_* crates.

Changes:

• Bump workspace/package version from 0.6.0 to 0.6.1.
• Update riscv dependency to 0.16 for RISC-V targets.
• Update aarch64-cpu dependency to 11.0 for AArch64 targets and refresh Cargo.lock.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated no comments.

File	Description
Cargo.toml	Bumps workspace version to 0.6.1.
page_table_multiarch/Cargo.toml	Updates riscv dependency version for RISC-V builds/docs.
page_table_entry/Cargo.toml	Updates aarch64-cpu dependency version for AArch64 builds/docs.
Cargo.lock	Locks updated dependency graph/versions consistent with the manifest bumps.

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[equation314]

Update CHANGELOG.md and create a tag?

[AsakuraMizu]

Update CHANGELOG.md and create a tag?

5458ee5