Eric Engestrom
cc5e7f8b9b
Without this, the job always exists but it depends on things that don't
always exist, leading to errors like this one
(https://gitlab.freedesktop.org/sixtyfourktec/mesa/-/pipelines/1133679):
```
'shader-db' job needs 'debian-build-testing' job, but 'debian-build-testing' is not in any previous stage
```
Fixes: 3983ae89e9 ("Split debian-build-testing job")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28334>