Timeout test is flaky

[kal]

The timeout test in TestJsonActions.testErrorHandler() fails intermittently in GH Actions and in local builds.

[kal]

I've bumped up the timeout period from 100ms to 200ms as a workaround for now, but it would be good to find a better way to implement the test if possible.

[kal]

Just to note, I tried doubling the sleep on #63 and the test still failed. I also tried (locally) with a sleep of 1000ms and still got a test failure.