chore: Replace fmt.Printf calls with warning logs (#1305) #475

Job	Run time
staticcheck	1m 39s
test (1.23.x, ubuntu-latest-128)	18m 4s
test (1.23.x, windows-latest)	4m 15s
test (1.23.x, macos-latest)	3m 43s
slack-notifications / notify_slack	3s
	27m 44s

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