[3.x] Increase query count in excessive TCP query tests

In a recent Ubuntu 24.04 runner update something changed that makes PHP
code seemingly more performant. In #236 this issue is shown to have
something to do with 24.04 because without code changes it works on 22
.04. However, that doesn't fix the underlying issue.

While I'm not sure what changed, by increasing these two numbers by 10
folding them we're back at passing tests,

Author: WyriHaximus

tests/Query/TcpTransportExecutorTest.php

@@ -337,7 +337,7 @@ public function testQueryStaysPendingWhenClientCanNotSendExcessiveMessageInOneCh
         $query = new Query('google' . str_repeat('.com', 100), Message::TYPE_A, Message::CLASS_IN);
 
         // send a bunch of queries and keep reference to last promise
-        for ($i = 0; $i < 2000; ++$i) {
+        for ($i = 0; $i < 20000; ++$i) {
             $promise = $executor->query($query);
         }
 
@@ -372,7 +372,7 @@ public function testQueryRejectsWhenClientKeepsSendingWhenServerClosesSocketWith
 
         // send a bunch of queries and keep reference to last promise
         $exception = null;
-        for ($i = 0; $i < 2000; ++$i) {
+        for ($i = 0; $i < 20000; ++$i) {
             $promise = $executor->query($query);
             $promise->then(null, function (\Exception $reason) use (&$exception) {
                 $exception = $reason;