[llvm] [Release] Pass -n to gzip so the release tarball is reproducible (PR #216533)

[Larry Meadows via llvm-commits]

lfmeadow wrote:

Trimmed. The AMD commit's message is just "fix lintian warning", so I kept that framing and added the version detail. Happy to close this instead if the script is going away.


https://github.com/llvm/llvm-project/pull/216533