build(deps): bump actions/checkout from 3 to 4 #502

Job	Run time
windows	3m 33s
windows	3m 33s
spm-test	5m 51s
spm-test	5m 51s
test (platform=iOS\ Simulator,name=iPhone\ 14\ Pro\ Max, test)	22m 34s
test (platform=iOS\ Simulator,name=iPhone\ 14\ Pro\ Max, test)	19m 40s
linux	3m 33s
linux	3m 33s
test (platform\=tvOS\ Simulator,name\=Apple\ TV, test)	9m 33s
test (platform\=tvOS\ Simulator,name\=Apple\ TV, test)	9m 33s
test (platform=watchOS\ Simulator,name=Apple\ Watch\ Series\ 5\ \(40mm\), build)	2m 41s
test (platform=watchOS\ Simulator,name=Apple\ Watch\ Series\ 5\ \(40mm\), build)	2m 41s
test (platform=macOS, test)	8m 47s
test (platform=macOS, test)	8m 47s
cocoapods	8m 37s
cocoapods	8m 37s
docs	2m 19s
docs	2m 19s
xcode-test-5_5	1m 44s
xcode-test-5_5	1m 44s
	2h 15m 30s

Provide feedback