Bump com.puppycrawl.tools:checkstyle from 10.12.5 to 10.12.6 #938

Job	Run time
Build with no staging repository, using only central-released artifacts	2m 32s
Test on JDK 17	1m 40s
Smoke Tests imqadmin @ Java 11	9s
Smoke Tests imqbridgemgr @ Java 11	10s
Smoke Tests imqbrokerd @ Java 11	9s
Smoke Tests imqcmd @ Java 11	7s
Smoke Tests imqdbmgr @ Java 11	8s
Smoke Tests imqobjmgr @ Java 11	11s
Smoke Tests imqusermgr @ Java 11	9s
Smoke Tests imqadmin @ Java 17	8s
Smoke Tests imqbridgemgr @ Java 17	9s
Smoke Tests imqbrokerd @ Java 17	12s
Smoke Tests imqcmd @ Java 17	9s
Smoke Tests imqdbmgr @ Java 17	8s
Smoke Tests imqobjmgr @ Java 17	12s
Smoke Tests imqusermgr @ Java 17	8s
Smoke Tests imqadmin @ Java 21	8s
Smoke Tests imqbridgemgr @ Java 21	12s
Smoke Tests imqbrokerd @ Java 21	12s
Smoke Tests imqcmd @ Java 21	12s
Smoke Tests imqdbmgr @ Java 21	12s
Smoke Tests imqobjmgr @ Java 21	9s
Smoke Tests imqusermgr @ Java 21	13s
Test MQCRT Library on ubuntu-latest/JDK 17	45s
Test MQCRT Library on ubuntu-latest/JDK 21	41s
Test MQCRT Library on macos-latest/JDK 17	1m 41s
Test MQCRT Library on macos-latest/JDK 21	1m 36s
	12m 22s

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