devel/rbenv: devel/rbenv: Update to 1.1.2

• Fix rehash mechanism for versions of bash that complain about clobbering /dev/null
• Enforce absolute RBENV_DIR to avoid having to unset CDPATH
• rbenv-version-file: ensure that the version file is a file
• rbenv init -: fix output to work without args and set -u
• rbenv shell: better error message when shell integration wasn't enabled
• Enable freezing rbenv version via rbenv version-name > .ruby-version in the shell
• rbenv-which: avoid changing PATH unless necessary
• rbenv-prefix: do not silence rbenv-which errors for system version

PR: 236859
Submitted by: Jose Luis Duran <jlduran@gmail.com>
Relnotes: https://github.com/rbenv/rbenv/releases/tag/v1.1.2