internal/manifests/collector: switch internally to v1alpha2 #6491

Job	Run time
End-to-end tests e2e on K8s 1.23	9m 10s
End-to-end tests e2e-instrumentation on K8s 1.23	10m 50s
End-to-end tests e2e-upgrade on K8s 1.23	7m 44s
End-to-end tests e2e-autoscale on K8s 1.23	8m 34s
End-to-end tests e2e-pdb on K8s 1.23	7m 18s
End-to-end tests e2e-opampbridge on K8s 1.23	7m 20s
End-to-end tests e2e-prometheuscr on K8s 1.23	7m 39s
End-to-end tests e2e-multi-instrumentation on K8s 1.23	8m 45s
End-to-end tests e2e on K8s 1.29	8m 7s
End-to-end tests e2e-instrumentation on K8s 1.29	8m 21s
End-to-end tests e2e-upgrade on K8s 1.29	7m 52s
End-to-end tests e2e-autoscale on K8s 1.29	7m 13s
End-to-end tests e2e-pdb on K8s 1.29	7m 15s
End-to-end tests e2e-opampbridge on K8s 1.29	6m 57s
End-to-end tests e2e-prometheuscr on K8s 1.29	7m 28s
End-to-end tests e2e-multi-instrumentation on K8s 1.29	8m 6s
e2e-tests-check	1s
	2h 8m 40s

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