chore(release): 1.0.0-alpha.5 [skip ci]

# [1.0.0-alpha.5](https://git.gitlab.arm.com/bazel/ape/compare/v1.0.0-alpha.4...v1.0.0-alpha.5) (2024-02-24)

### Bug Fixes

* register toolchains for supported platforms ([37883016](https://git.gitlab.arm.com/bazel/ape/commit/3788301606765c37ad6f22ebb01d86168319d355))

### Features

* add `ape_toolchain` macro ([e89d679e](https://git.gitlab.arm.com/bazel/ape/commit/e89d679e18822f90ac64f14479932b0477ee8239))