[churn] Attempt to fix flaky JedisPubSubBaseTest (#4346)

attempt to fix flaky JedisPubSubBaseTest

Error:  redis.clients.jedis.JedisPubSubBaseTest.testProceed_givenThreadInterrupt_exitLoop -- Time elapsed: 0.030 s <<< FAILURE!
org.opentest4j.AssertionFailedError: expected: <true> but was: <false>

Author: ggivo

src/test/java/redis/clients/jedis/JedisPubSubBaseTest.java

@@ -55,6 +55,6 @@ protected String encode(byte[] raw) {
         });
         thread.start();
 
-        assertTrue(countDownLatch.await(10, TimeUnit.MILLISECONDS));
+        assertTrue(countDownLatch.await(30, TimeUnit.MILLISECONDS));
     }
 }