Add AIX/ppc64 to CI builds #31338

Job	Run time
contrib-tests-matrix (receiver-0)	1m 7s
contrib-tests-matrix (receiver-1)	1m 8s
contrib-tests-matrix (receiver-2)	1m 6s
contrib-tests-matrix (receiver-3)	1m 5s
contrib-tests-matrix (processor)	1m 8s
contrib-tests-matrix (exporter-0)	1m 9s
contrib-tests-matrix (exporter-1)	1m 8s
contrib-tests-matrix (extension)	1m 7s
contrib-tests-matrix (connector)	1m 10s
contrib-tests-matrix (internal)	1m 9s
contrib-tests-matrix (pkg)	1m 7s
contrib-tests-matrix (cmd-0)	46s
contrib-tests-matrix (cmd-1)	1m 6s
contrib-tests-matrix (other)	1m 8s
contrib_tests	1s
	15m 25s

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