Fix for 'Run gem install bundler' error

[sarah-beasley]

This error may be coming up when trying to make a change in your site repository:

Please make the below changes in order to fix this:
In your .github/workflows folder in your site repository - you will need to update the "gem install bundler" line in all of the files that you have in this folder that contain this line, to point to a specific version.

For example, in the following files in your .github/workflows folder:
deploy-to-production.yml
deploy-to-staging.yml
test-pull-requests.yml

You need to replace:

gem install bundler

with:

gem install bundler -v 2.4.22

[christoph-LSN]

@sarah-beasley
Perhaps it's helpfull to add that the .github/workflows folder of the site repository containing the gem install bundler line

[sarah-beasley]

Thanks Christoph