bump webserver to v1.0.4 #6317

Job	Run time
End-to-end tests e2e on K8s 1.23	9m 36s
End-to-end tests e2e-instrumentation on K8s 1.23	10m 42s
End-to-end tests e2e-upgrade on K8s 1.23	7m 47s
End-to-end tests e2e-autoscale on K8s 1.23	7m 17s
End-to-end tests e2e-pdb on K8s 1.23	6m 55s
End-to-end tests e2e-opampbridge on K8s 1.23	6m 54s
End-to-end tests e2e-prometheuscr on K8s 1.23	7m 27s
End-to-end tests e2e-multi-instrumentation on K8s 1.23	8m 21s
End-to-end tests e2e on K8s 1.29	9m 25s
End-to-end tests e2e-instrumentation on K8s 1.29	8m 8s
End-to-end tests e2e-upgrade on K8s 1.29	7m 27s
End-to-end tests e2e-autoscale on K8s 1.29	7m 4s
End-to-end tests e2e-pdb on K8s 1.29	6m 50s
End-to-end tests e2e-opampbridge on K8s 1.29	6m 48s
End-to-end tests e2e-prometheuscr on K8s 1.29	7m 39s
End-to-end tests e2e-multi-instrumentation on K8s 1.29	7m 53s
e2e-tests-check	1s
	2h 6m 14s

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