Build and upload Rust binary to GitHub Releases

Version updated for taiki-e/upload-rust-binary-action to version v1.21.0.

• This action is used across all versions by 1,999 repositories.

Go to the GitHub Marketplace to find the latest changes.

Release notes

• Add outputs for the archive and checksum files. (#77, thanks @matiaskorhonen)

• taiki-e
• GitHub Actions