fix(adserver): adserver returns cloudevents compatible response (#5348) #394

Job	Run time
security-executor	1m 20s
security-python	48s
security-image-executor	23s
security-image-operator	23s
security-operator	32s
security-image-alibi-explain	2m 5s
security-image-python-base	12s
security-image-python-mlflow	1m 8s
security-image-python-sklearn	59s
security-image-python-xgboost	1m 8s
security-image-alibi-detect	2m 52s
security-image-initializer-rclone	20s
	12m 10s

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