Tests

Bump actions/checkout from 3 to 4 (#164) #283

Job	Run time
Test PHP 7.4 using broker [mosquitto-1.6]	1m 37s
Test PHP 7.4 using broker [mosquitto-2.0]	1m 31s
Test PHP 7.4 using broker [hivemq]	1m 54s
Test PHP 7.4 using broker [emqx]	1m 37s
Test PHP 7.4 using broker [rabbitmq]	2m 2s
Test PHP 8.0 using broker [mosquitto-1.6]	1m 32s
Test PHP 8.0 using broker [mosquitto-2.0]	1m 52s
Test PHP 8.0 using broker [hivemq]	1m 52s
Test PHP 8.0 using broker [emqx]	1m 37s
Test PHP 8.0 using broker [rabbitmq]	1m 44s
Test PHP 8.1 using broker [mosquitto-1.6]	1m 49s
Test PHP 8.1 using broker [mosquitto-2.0]	4m 46s
Test PHP 8.1 using broker [hivemq]	1m 51s
Test PHP 8.1 using broker [emqx]	1m 45s
Test PHP 8.1 using broker [rabbitmq]	1m 37s
	29m 6s

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