[ISSUE #5311] less concurrency #2065

Job	Run time
changes	40s
build-docker-images	7m 23s
e2e-case (shenyu-e2e-case-http, e2e-http-sync)	21m 19s
e2e-case (shenyu-e2e-case-spring-cloud, e2e-springcloud-sync)	17m 6s
e2e-cluster (shenyu-e2e-case-cluster, e2e-cluster-jdbc)	5m 21s
e2e-case (shenyu-e2e-case-apache-dubbo, e2e-apache-dubbo-sync)	17m 42s
e2e-cluster (shenyu-e2e-case-cluster, e2e-cluster-zookeeper)	9m 29s
e2e-case (shenyu-e2e-case-sofa, e2e-sofa-sync)	16m 58s
e2e-case (shenyu-e2e-case-grpc, e2e-grpc-sync)	16m 56s
e2e-case (shenyu-e2e-case-websocket, e2e-websocket-sync)	16m 40s
e2e-storage (shenyu-e2e-case-storage, e2e-h2)	4m 5s
e2e-storage (shenyu-e2e-case-storage, e2e-mysql)	4m 35s
e2e-storage (shenyu-e2e-case-storage, e2e-postgres)	5m 0s
e2e-storage (shenyu-e2e-case-storage, e2e-opengauss)	5m 3s
e2e	0s
	2h 28m 17s

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