Auto-port 4.1: Increase timeout in test to address flakyness (netty#17345)

Auto-port of netty#17342 to 4.1
Cherry-picked commit: ea2faef

---
Motivation:

The DataCompressionHttpTest.encodingTooBigMessage(...) operates on a lot
of data so we should use a higher timeout when waiting on the latch so
we not fail due of slow execution time on the CI

Modifications:

Increase timeout to 10 seconds

Result:

Hopefully less flaky test

Co-authored-by: Norman Maurer <norman_maurer@apple.com>

Author: netty-project-bot

codec-http2/src/test/java/io/netty/handler/codec/http2/DataCompressionHttp2Test.java

@@ -263,7 +263,7 @@ public void encodingTooBigMessage(final int padding, AsciiString compressionAlgo
         testEncodingMessage(padding, text, compressionAlgorithm, new Callable<Void>() {
             @Override
             public Void call() throws Exception {
-                assertTrue(serverLatch.await(5, SECONDS));
+                assertTrue(serverLatch.await(10, SECONDS));
                 serverOut.flush();
                 Throwable cause = serverException.get();
                 if (cause == null) {