chore: update .gitlab-ci to remove before_scripts step in releasing jobs

Description

Remove useless "before_scripts" property of jobs related to releasing eDrive. Because jq, aapt & apk signer are now integrated in the docker image by default

Screenshots

Technical details

Also remove openssh installation check in last job as requested in review

Tests

Issues

https://gitlab.e.foundation/e/backlog/-/issues/8253

10 commandments of code reviews

👪 ❤ https://gitlab.e.foundation/internal/wiki/-/wikis/mobile-team/guidelines/Code-review