add release date #187

Job	Run time
test-dependencies (phpxmlrpc/extras)	59s
test (8.4, ubuntu-24.04)	1m 59s
test-dependencies (phpxmlrpc/polyfill-xmlrpc)	1m 38s
test (8.3, ubuntu-22.04)	4m 37s
test (8.2, ubuntu-22.04)	4m 34s
test (8.1, ubuntu-22.04)	5m 4s
test (8.0, ubuntu-22.04)	4m 39s
test (7.4, ubuntu-22.04, true)	5m 10s
test (7.3, ubuntu-22.04)	4m 45s
test (7.2, ubuntu-20.04)	6m 38s
test (7.1, ubuntu-20.04)	6m 36s
test (7.0, ubuntu-20.04)	6m 53s
test (5.6, ubuntu-20.04)	6m 49s
test (5.5, ubuntu-22.04)	4m 9s
test (5.4, ubuntu-20.04)	6m 25s
	1h 10m 55s

Provide feedback