chore: Cleanup JsonSupport #209

Job	Run time
Basic checks	50s
Build and publish artifacts and plugins locally	2m 15s
Run annotation processor tests	1m 47s
Run sbt test	1m 23s
Check service docker image contents	37s
Maven samples (shopping-cart-quickstart, true)	1m 1s
Maven samples (choreography-saga-quickstart, true)	1m 12s
Maven samples (doc-snippets, false)	46s
Maven samples (view-store, true)	1m 16s
Maven samples (spring-dependency-injection, true)	44s
Maven samples (event-sourced-customer-registry, true)	28s
Maven samples (event-sourced-counter-brokers, docker compose up -d, true)	1m 28s
Maven samples (event-sourced-customer-registry-subscriber, true, ./start-upstream.sh)	1m 1s
Maven samples (key-value-counter, true)	46s
Maven samples (key-value-shopping-cart, true)	1m 6s
Maven samples (key-value-customer-registry, true)	52s
Maven samples (tracing, false)	33s
Maven samples (reliable-timers, true)	40s
Maven samples (transfer-workflow, true)	1m 5s
Maven samples (transfer-workflow-compensation, true)	49s
	20m 39s

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