TEST: add VCR recording workflow

[igor-davidyuk]

This PR introduces a manual GItHub action workflow that rebuilds VCR cassettes and pushes it back to the branch

[ljcornel]

Thanks! Looks good overall, just some minor comments.

[ljcornel]

I think you will need contents: write permission in order to push changes. pull-requests: write may not be needed I believe

[igor-davidyuk]

I imagine it works like this:
You create a PR with communication-breaking changes and have the tests fail. Then you run this workflow and it updates the cassettes right in your PR. This is why I have this permission in place

[ljcornel]

I see where you're coming from but I'm actually not 100% sure about the exact scope of the permissions. I thought that for pushing to any branch you'd need to have contents: write permissions, but if the PR is made from a fork of the repo then you're probably right and you'd need to be able to write to pull-requests as well.

Let's keep it as is and see if it works, we can always update them later.