feat!: Use base64 instead of hex encoding for binary data

[offirgolan]

Resolves #371

[roschaefer]

@offirgolan @netflixgithub could you please release @pollyjs/adapter-node-http and the other packages affected by this PR? The last time it was Published a year ago.

I'm trying to decode a _isBinary response object in an beforePersist hook. Kind of similar to what @renanvalentin asked for here. Is there a way to always save a response as utf-8 (avoid _isBinary) in order to filter sensitive data before persisting?

[offirgolan]

@roschaefer this PR was published with v6.0.0 ~2 months ago.

[roschaefer]

Yep, my bad. I was looking at the @types/pollyjs__adapter-node-http package. Thanks 👍