fix(deps): update dependency @bpmn-io/form-js-viewer to v1.12.0 #1903

Job	Run time
build-parallel-operations	30s
build-async-service-task	1m 5s
build-large-multi-instance-example	55s
build-element-template-generation	4m 15s
build-payment-example-process-application	50s
build-react-tasklist	56s
build-rollback-on-error-example	51s
build-start-form-springboot	33s
build-synchronous-response-springboot	38s
build-twitter-review-java-springboot	38s
build-timer-testing	3m 43s
build-zeebe-client-plain-java	25s
	15m 19s

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