Build and upload Rust binary to GitHub Releases

Version updated for taiki-e/upload-rust-binary-action to version v1.21.1.

• This action is used across all versions by 2,112 repositories.

Go to the GitHub Marketplace to find the latest changes.

Release notes

• Work around rustc’s strip bug that mostly affects illumos build. See #80 for details.

• taiki-e
• GitHub Actions