gitlab-ci: Use all_paths in .test-manual rules

Without this, the .test-manual jobs could end up as 'when: manual' when
the jobs they depend on were 'when: never', which was flagged as
invalid YAML, preventing the pipeline from being created.

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4522>
1 file changed