Use githubgen tool from go-build-tools #50011

Job	Run time
collector-build	8m 52s
docker-build	9m 11s
supervisor-test	54s
kubernetes-test-matrix (v1.30.0, receiver/k8sclusterreceiver)	6m 29s
kubernetes-test-matrix (v1.30.0, processor/k8sattributesprocessor)	8m 10s
kubernetes-test-matrix (v1.30.0, receiver/kubeletstatsreceiver)	4m 12s
kubernetes-test-matrix (v1.30.0, receiver/k8sobjectsreceiver)	3m 0s
kubernetes-test-matrix (v1.23.17, receiver/k8sclusterreceiver)	6m 32s
kubernetes-test-matrix (v1.23.17, processor/k8sattributesprocessor)	8m 11s
kubernetes-test-matrix (v1.23.17, receiver/kubeletstatsreceiver)	4m 5s
kubernetes-test-matrix (v1.23.17, receiver/k8sobjectsreceiver)	3m 11s
kubernetes-test	1s
	1h 2m 48s

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