use --no-same-owner to fix tar errors

[kybe236]

Motivation

Add --no-same-owner to the tar command to fix ownership errors when building crates in Docker.

Without this flag, building a crate with crane can fail with errors like:
cargo-package-pin-utils> tar: .gitignore: Cannot change ownership to uid 460880, gid 5001: Invalid argument

--no-same-owner prevents tar from setting the UID to the tar archive's encoded owner.
After adding this simple flag, it compiles fine

I thought that if it works for me, I might as well make a PR.

Checklist

• added tests to verify new behavior
• added an example template or updated an existing one
• updated docs/API.md (or general documentation) with changes
• updated CHANGELOG.md

[ipetkov]

Thank you for the contribution! This looks good, ultimately there's no need to respect the owner as specified in the tarball as the Nix store entry will reset that bit of info anyway