chore(release): prepare v0.4.1

[chaliy]

What

Prepare FetchKit v0.4.1 patch release.

Why

Ship the merged patch fixes since v0.4.0.

How

• Bump workspace version to 0.4.1
• Update fetchkit-cli internal dependency pin
• Update Cargo.lock package versions
• Add v0.4.1 changelog section

Risk

• Low
• Release metadata only; no runtime code changes in this PR

Release Notes

Highlights

• Bare host inputs such as example.com are now accepted and normalized before fetching.
• URL handling is more consistent across direct and specialized fetcher paths, including docs pages.
• Vulnerable Rust dependencies were updated.

What's Changed

• fix: normalize direct fetcher URLs (#141)
• fix(fetcher): respect docs page URLs (#140)
• fix(deps): update vulnerable Rust dependencies (#139)
• fix: accept bare host URLs (#138)

Checklist

• Unit tests are passed
• Smoke tests are passed
• Documenation is updated
• Specs are up to date and not in conflict
• Formatting passed
• Clippy passed
• Docs build passed with warnings denied
• Release build smoke passed