Update skippedCtsTest.txt.

PriorityQueueTest#test_spliterator_CME was removed as it no longer
throws CME.
libcore.sun.misc.SharedSecretsTest#testGetJavaIOFileDescriptorAccess_notNull
SharedSecrets were moved to a different package.

Bug: 316502724
Test: CtsLibcoreTestCases
Change-Id: I21e9a270c7beb3d97fed4442df115a7107f0ba88