[chronik] Bump timeout for chronik_ws_ordering

Summary: The timeout is too low for our slow CI machines (namely qemu).

Test Plan:

./test/functional/test_runner.py chronik_ws_ordering

Reviewers: #bitcoin_abc, PiRK

Reviewed By: #bitcoin_abc, PiRK

Differential Revision: https://reviews.bitcoinabc.org/D15454