Ability to completely disable caching

[breadadams]

We're using the CLI version of bundlesize2 in a private GH org. and don't want (or require) the caching functionality. In fact it appears GHES security policies are blocking the request, causing a big ugly error in our pipeline before the results are printed.

Are contributions welcome? I would like to introduce an optional configuration option to opt-out of caching.

This has also been requested here.