Bump actions/checkout from 3 to 4 #7676

Job	Run time
smoke	3m 19s
mvn clean install - jdk17	13m 43s
gremlin-server default	39m 36s
gremlin-console	7m 3s
gremlin-server unified	22m 45s
cache gremlin-server docker image	2m 26s
mvn clean install - jdk11	18m 37s
mvn clean install - jdk8	27m 34s
neo4j-gremlin	9m 0s
spark core (ubuntu-latest)	12m 15s
spark gryo (ubuntu-latest)	9m 54s
spark core (windows-latest)	3m 42s
spark gryo (windows-latest)	3m 40s
.NET	6m 48s
javascript (ubuntu-latest)	5m 50s
go	4m 54s
gremlin-driver	3m 50s
python	5m 44s
	3h 20m 40s

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