chore: rename ES testkit utility method #233

Job	Run time
Basic checks	52s
Build and publish artifacts and plugins locally	2m 24s
Check service docker image contents	45s
Run annotation processor tests	1m 42s
Run sbt test	4m 5s
Maven samples (shopping-cart-quickstart, true)	1m 2s
Maven samples (choreography-saga-quickstart, true)	50s
Maven samples (doc-snippets, false)	30s
Maven samples (view-store, true)	1m 31s
Maven samples (spring-dependency-injection, true)	47s
Maven samples (event-sourced-customer-registry, true)	1m 1s
Maven samples (event-sourced-counter-brokers, docker compose up -d, true)	1m 25s
Maven samples (event-sourced-customer-registry-subscriber, true, ./start-upstream.sh)	1m 5s
Maven samples (key-value-counter, true)	1m 27s
Maven samples (key-value-shopping-cart, true)	41s
Maven samples (key-value-customer-registry, true)	53s
Maven samples (tracing, false)	32s
Maven samples (reliable-timers, true)	38s
Maven samples (transfer-workflow, true)	1m 3s
Maven samples (transfer-workflow-compensation, true)	46s
	23m 59s

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