Remove caching gems and installing Bundle steps on the review_pull_request workflows

[chornerman]

Why

Since we migrated to use the ruby/setup-ruby action for setting up Ruby on the review_pull_request workflows, we can set bundler-cache: true instead of manually caching gems and installing Bundle on different steps. Please check out more detail on the documentation.

For the POC, please check out this PR

Who Benefits?

Everyone

Acceptance Criteria

On review_pull_request workflows (both inside .cicdtemplate and .template)

• Remove Cache gems and Install Bundle and check environment versions steps
• Add bundler-cache: true to Set up Ruby step