Update gradle/wrapper-validation-action action to v2 #795

Job	Run time
jvm \| StringConcat inline \| K2 true	3m 58s
jvm \| StringConcat inline \| K2 false	2m 38s
all-platforms (macos-11)	6m 1s
jvm \| StringConcat indy \| K2 true	2m 50s
all-platforms (ubuntu-latest)	2m 29s
jvm \| StringConcat indy \| K2 false	2m 28s
all-platforms (windows-latest)	4m 47s
jvm \| StringConcat indy-with-constants \| K2 true	2m 48s
jvm \| StringConcat indy-with-constants \| K2 false	3m 17s
publish	0s
	31m 16s

Provide feedback