fix: Decrypt the read bytes in ZipCrypto instead of entire buffer

[awaken1ng]

Resend of zip-rs#431.

Fixes corrupt deflate stream error when decompressing an encrypted archive with buffered reader (zip-rs#280).

[Pr0methean]

Sorry for all the updates; I've been trying to troubleshoot https://github.com/zip-rs/zip2/actions/workflows/auto_merge_prs.yml, which somehow broke when I transferred this repo to be organization-owned in order to enable merge queues (issue now tracked at #40).

[awaken1ng]

Understandable, good old CI whack-a-mole.

Looked at the fuzz_write_with_no_features failure, originates from CentralDirectoryEnd here, unrelated to PR changes.

Should I rebase to clean up the merge branch commits?

[Pr0methean]

You can if you like; meanwhile I'll look into the fuzz failure today.

[Pr0methean]

Found the cause of the fuzz failure; 4297229 should fix it.

[Pr0methean]

Update: merge-queue checks may fail again because of a missing DevSkim check, but fd0a113 should fix that.

[Pr0methean]

Merge-queue checks timed out again; decreased the amount of fuzz testing so that the GitHub Actions workers can catch up with the backlog.