chore(release): 1.0.0-alpha.13 [skip ci]

# [1.0.0-alpha.13](https://git.gitlab.arm.com/bazel/rules_toolchain/compare/v1.0.0-alpha.12...v1.0.0-alpha.13) (2023-12-13)

### Bug Fixes

* correct MacOS constraint ([4259c2de](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/4259c2deb70d7c4aa4ac40f274a460e9be35675b))