IPC named locks on Windows has unstable tests

[cstamas]

Affected version

master

Bug description

It seems that IPC tests are unstable on Windows: quite often on Windows CI nodes this happens:

Error:  Tests run: 9, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 16.16 s <<< FAILURE! -- in org.eclipse.aether.named.ipc.IpcNamedLockFactoryIT
Error:  org.eclipse.aether.named.ipc.IpcNamedLockFactoryIT.exclusiveAccess(TestInfo) -- Time elapsed: 15.01 s <<< ERROR!
java.util.concurrent.TimeoutException: exclusiveAccess(org.junit.jupiter.api.TestInfo) timed out after 15 seconds
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1604)
	Suppressed: java.lang.InterruptedException
		at java.base/java.lang.Object.wait0(Native Method)
		at java.base/java.lang.Object.wait(Object.java:389)
		at java.base/java.lang.Thread.join(Thread.java:1887)
		at java.base/java.lang.Thread.join(Thread.java:1963)
		at org.eclipse.aether.named.ipc.NamedLockFactoryTestSupport.exclusiveAccess(NamedLockFactoryTestSupport.java:147)
		at java.base/java.lang.reflect.Method.invoke(Method.java:565)
		... 2 more