tests: increase Awaitility timeout in AbstractAsyncThreadContextTestBase to 5s to reduce flakiness

Signed-off-by: kcruz28 <[email protected]>

Author: Kcruz28

log4j-core-test/src/test/java/org/apache/logging/log4j/core/async/AbstractAsyncThreadContextTestBase.java

@@ -171,7 +171,8 @@ protected void testAsyncLogWritesToLog(final ContextImpl contextImpl, final Mode
         for (int i = 0; i < LINE_COUNT; i++) {
             // buffer may be full
             if (i >= 128) {
-                waitAtMost(500, TimeUnit.MILLISECONDS)
+                // Allow more time for the async logger to free buffer space on slower environments.
+                waitAtMost(5, TimeUnit.SECONDS)
                         .pollDelay(10, TimeUnit.MILLISECONDS)
                         .until(() -> remainingCapacity.getAsLong() > 0);
             }