fix: extend flaky CI waits

Author: dkropachev

core/src/test/java/com/datastax/oss/driver/internal/core/metadata/MetadataManagerTest.java

@@ -528,6 +528,6 @@ public void removeNode(InetSocketAddress broadcastRpcAddress) {
 
   // Wait for all the tasks on the pool's admin executor to complete.
   private void waitForPendingAdminTasks(Callable<Boolean> condition) {
-    await().atMost(5, TimeUnit.SECONDS).until(condition);
+    await().atMost(10, TimeUnit.SECONDS).until(condition);
   }
 }

integration-tests/src/test/java/com/datastax/oss/driver/core/cql/PreparedStatementCachingIT.java

@@ -269,8 +269,9 @@ private void invalidationTestInner(
       assertThat(Uninterruptibles.awaitUninterruptibly(typeChangeEventLatch, 60, TimeUnit.SECONDS))
           .withFailMessage("typeChangeEventLatch did not trigger before timeout")
           .isTrue();
+      // Scylla schema propagation can lag long enough in CI that the removal callback arrives late.
       await()
-          .atMost(120, TimeUnit.SECONDS)
+          .atMost(4, TimeUnit.MINUTES)
           .untilAsserted(
               () -> {
                 assertThat(removedQueryIds.get()).isNotEmpty().get().isEqualTo(queryId2);