Revert https://gitlab.com/gitlab-org/gitlab/-/merge_requests/190568
The following discussion from !190244 should be addressed:
- [ ] @ashvins started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/190244#note_2516774872): (+7 comments)
> I had a discussion with @adebayo_a about this- since we tested that sysbox version `0.6.7` works without any modification from our side I am closing this MR. In case we receive a similar bug report, our recommendation will be to bump up the sysbox version.
>
> cc @cwoolley-gitlab @vtak
[This change ](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/190568)will be reverted to keep the permission bits the same everywhere we mount a secret and adhere ourselves with principle of least privilege.
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