chore(release): 1.0.0-beta.19 [skip ci]

# [1.0.0-beta.19](https://git.gitlab.arm.com/bazel/toolchain_utils/compare/v1.0.0-beta.18...v1.0.0-beta.19) (2024-12-04)

### Bug Fixes

* strip output of `uname -r` ([4de60581](https://git.gitlab.arm.com/bazel/toolchain_utils/commit/4de60581787b6ae1a8694d673080042ac8cc7bac))