[chronik] Bump karyon_jsonrpc to version 0.3.2

Summary: It has better memory management and support for larger messages.

Test Plan: Build and run the chronik tests.

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Subscribers: PiRK

Differential Revision: https://reviews.bitcoinabc.org/D18148