Update jquery.terminal to the latest version

In MGNLGROOVY-232 we found out that using the latest available jQuery Terminal version (2.34.0) broke the autocompletion. See notes / draft work on the following PR: https://git.magnolia-cms.com/projects/MODULES/repos/groovy/pull-requests/52/overview

We then decided to use 0.11.2 but should nevertheless try to jump to the latest version. Eventually back to 2.34.1 as version 0.11.2 was affected by a vulnerability. The autocompletion partial break will be tackled in a follow-up ticket.