Cache save(...) does not correctly handle no-cache directive

[Cooksauce]

RFC: https://www.rfc-editor.org/rfc/rfc7234#section-5.2.2.2

The "no-cache" response directive indicates that the response MUST
NOT be used to satisfy a subsequent request without successful
validation on the origin server. This allows an origin server to
prevent a cache from using it to satisfy a request without contacting
it, even by caches that have been configured to send stale responses.

Problem Scenario:

1. a previous response to a request had a cacheable cache-control header value... thus, has been stored via save(...)
2. for some reason, this is no longer desired... so a change is made to is made to a subsequent response in which a no-cache value is in the response header
3. when save(...) is called, it should have the effect of "busting" the originally cached value... the current implementation effectively no-ops here

Effect

In the most extreme case, this can lead to a significant security issue if the cache needs to be busted for security reasons.
(From testing, the Cloudflare caching "Purge Everything" UI functionality does not clear this.)