[DRE-maint] Bug#1094561: ruby-vcr: FTBFS: ERROR: Test "ruby3.3" failed: cannot load such file -- rack/handler/webrick

[Lucas Nussbaum]

VCR needs to be updated to support rack 3 / rackup.

However, we are stuck with version 5 of VCR, since more recent versions
switched to a non-free license (see #984689), and upstream issues
https://github.com/vcr/vcr/issues/959 
https://github.com/vcr/vcr/issues/804
https://github.com/vcr/vcr/pull/805

It's clear the maintainer is not going to change their mind.

So, there are two paths foward: fix VCR 5.x to support rack3 (and fix it
again when future changes will break it again), or remove
it from Debian.

Removing it would require patching software that uses VCR (mostly in
test suites).  I could identify:

nanoc
ruby-coveralls
ruby-graphlient
ruby-html-proofer
ruby-mixlib-install
ruby-octokit

There's also ruby-faraday, that depends on it but does not seem to use
it.

Lucas