Fix failing exception assertion

See gh-37964

Author: philwebb

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/graphql/GraphQlMetricsInstrumentationTests.java

@@ -43,7 +43,7 @@
 import org.springframework.boot.actuate.metrics.AutoTimer;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.mock;
@@ -145,7 +145,7 @@ void shouldRecordDataFetchingMetricWhenError() throws Exception {
 		InstrumentationFieldFetchParameters fieldFetchParameters = mockFieldFetchParameters(false);
 		DataFetcher<?> instrumented = this.instrumentation.instrumentDataFetcher(dataFetcher, fieldFetchParameters);
 		DataFetchingEnvironment environment = DataFetchingEnvironmentImpl.newDataFetchingEnvironment().build();
-		assertThatIllegalArgumentException().isThrownBy(() -> instrumented.get(environment));
+		assertThatIllegalStateException().isThrownBy(() -> instrumented.get(environment));
 		Timer timer = this.registry.find("graphql.datafetcher").timer();
 		assertThat(timer).isNotNull();
 		assertThat(timer.count()).isEqualTo(1);