Run `bundle install` in gems/ to adjust changed dependency

What does this MR do and why?

In !134777 (merged) a dependency in gitlab-rspec was updated but bundle install was not run for vendored gems which are dependent on gitlab-rspec.

This MR runs bundle install in those gems.

How to set up and validate locally

for i in $(find gems -type d -maxdepth 1); do (cd $i && bundle); done

git diff
# Nothing to see

Follow-up

Ensure that gems' child pipelines are run whenever a Gemfile.lock has changed. See #417428 (closed)

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.