chore(release): 1.0.0-alpha.8 [skip ci]

# [1.0.0-alpha.8](https://git.gitlab.arm.com/bazel/rules_toolchain/compare/v1.0.0-alpha.7...v1.0.0-alpha.8) (2023-12-11)

### Bug Fixes

* make sure symlinks have `.exe` extension on Windows ([85f15d1b](https://git.gitlab.arm.com/bazel/rules_toolchain/commit/85f15d1b590237374c59c8037eca3ea56777c8ee))