[3.15.x] Switch from docker.io to gcr.io for container images #957

Job	Run time
initial-mvn-install	5m 12s
Integration Tests Alternative Platform - windows-latest	10m 27s
Integration Tests JDK - 21	11m 59s
Integration Tests - group-01	10m 15s
Integration Tests - group-02	9m 22s
Integration Tests - group-03	13m 44s
Integration Tests - group-04	11m 52s
Integration Tests - group-05	7m 51s
Integration Tests - group-06	15m 42s
Integration Tests - group-07	6m 49s
Integration Tests - group-08	5m 6s
Integration Tests - group-09	8m 14s
Integration Tests - group-10	9m 31s
	2h 6m 4s

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