Use awaitility for concurrency tests

[KyleAure]

Consider replacing this utility class:

concurrency/tck/src/main/java/ee/jakarta/tck/concurrent/framework/junit/extensions/Wait.java

Line 35 in 978b063

public final class Wait {

With awaitility: https://github.com/awaitility/awaitility

This will also make completing this TODO easier

concurrency/tck/src/main/java/ee/jakarta/tck/concurrent/framework/TestProperty.java

Line 38 in 978b063

//TODO - add properties to allow users to configure wait times