Debian bookworm (12) ships with OpenSSL 3, which is not supported by
Ruby 3.0 and older. In order to use Ruby 3.0 in bookworm, OpenSSL 1.1
was installed and referenced during the Ruby build.

Now that Ruby 3.1 is the default version for all builds, OpenSSL 1.1
can be removed.

Changelog: removed

Relates https://gitlab.com/gitlab-org/build/CNG/-/issues/726
Relates https://gitlab.com/gitlab-org/build/CNG/-/issues/723