Try to stabilize flaky MetricsWebClientFilterFunction test

Closes gh-26855

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/web/reactive/client/MetricsWebClientFilterFunctionTests.java

@@ -146,17 +146,17 @@ class MetricsWebClientFilterFunctionTests {
 	}
 
 	@Test
-	void filterWhenExceptionAndRetryShouldNotCumulateRecordTime() {
+	void filterWhenExceptionAndRetryShouldNotAccumulateRecordTime() {
 		ClientRequest request = ClientRequest
 				.create(HttpMethod.GET, URI.create("https://example.com/projects/spring-boot")).build();
 		ExchangeFunction exchange = (r) -> Mono.error(new IllegalArgumentException())
-				.delaySubscription(Duration.ofMillis(300)).cast(ClientResponse.class);
+				.delaySubscription(Duration.ofMillis(1000)).cast(ClientResponse.class);
 		this.filterFunction.filter(request, exchange).retry(1)
 				.onErrorResume(IllegalArgumentException.class, (t) -> Mono.empty()).block(Duration.ofSeconds(5));
 		Timer timer = this.registry.get("http.client.requests")
 				.tags("method", "GET", "uri", "/projects/spring-boot", "status", "CLIENT_ERROR").timer();
 		assertThat(timer.count()).isEqualTo(2);
-		assertThat(timer.max(TimeUnit.MILLISECONDS)).isLessThan(600);
+		assertThat(timer.max(TimeUnit.MILLISECONDS)).isLessThan(2000);
 	}
 
 }