only compile and upload current target

[cocoa-xu]

Just noticed that current CI will upload the same precompiled binary for x86_64 a few times, for example, https://github.com/elixir-sqlite/exqlite/actions/runs/11237432761/job/31239865968

Run softprops/action-gh-release@v1
⬆️ Uploading exqlite-nif-2.17-aarch64-linux-gnu-0.25.0.tar.gz...
⬆️ Uploading exqlite-nif-2.17-aarch64-linux-musl-0.25.0.tar.gz...
♻️ Deleting previously uploaded asset exqlite-nif-2.17-x86_64-linux-gnu-0.25.0.tar.gz...
⬆️ Uploading exqlite-nif-2.17-x86_64-linux-gnu-0.25.0.tar.gz...
🎉 Release ready at https://github.com/elixir-sqlite/exqlite/releases/tag/v0.25.0

And sometimes it might cause trouble in this way.

I'd like to address this issue in elixir_make and/or cc_precompiler, but sadly I haven't got enough bandwidth at the moment to add one more option/flag and test it properly and thoroughly. This PR should be good enough to do the job until then!

[warmwaffles]

@cocoa-xu do you know by any chance what this means or how to shut it up?

warning: key "exqlite-nif-2.16-aarch64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.16-riscv64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.16-x86_64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.17-aarch64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.17-riscv64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.17-x86_64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

[cocoa-xu]

@cocoa-xu do you know by any chance what this means or how to shut it up?

warning: key "exqlite-nif-2.16-aarch64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.16-riscv64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.16-x86_64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.17-aarch64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.17-riscv64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

warning: key "exqlite-nif-2.17-x86_64-linux-gnu-0.25.0.tar.gz" will be overridden in map
  nofile:1

I probably have some idea about where this comes from. I'll look into this later today or tomorrow!