Azure App Config: fix time format to time.duration #19080

Job	Run time
generate-matrix	5s
bindings.cron certification	3m 30s
bindings.dubbo certification	2m 52s
bindings.kafka certification	8m 59s
bindings.kitex certification	3m 57s
bindings.localstorage certification	3m 26s
bindings.postgres certification	4m 30s
bindings.rabbitmq certification	5m 28s
bindings.redis certification	4m 17s
configuration.postgres certification	3m 28s
configuration.redis certification	4m 37s
middleware.http.bearer certification	3m 29s
middleware.http.ratelimit certification	3m 26s
pubsub.kafka certification	9m 5s
pubsub.mqtt3 certification	7m 19s
pubsub.pulsar certification	13m 1s
pubsub.rabbitmq certification	6m 27s
secretstores.hashicorp.vault certification	8m 25s
secretstores.local.env certification	3m 41s
secretstores.local.file certification	3m 17s
state.cassandra certification	10m 44s
state.cockroachdb certification	5m 24s
state.memcached certification	4m 35s
state.mongodb certification	8m 28s
state.mysql certification	4m 29s
state.postgresql certification	3m 30s
state.redis certification	3m 46s
state.sqlite certification	3m 19s
Post-completion	2s
	2h 27m 36s

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