update atlas-validate plugin since v0.4.1 does not compile (#120)

Author: pjferrell

plugin.version

@@ -1,5 +1,5 @@
 atlas-app-toolkit=v0.19.2
 protoc-gen-gorm=v0.19.0
 protoc-gen-atlas-query-validate=v0.5.1
-protoc-gen-atlas-validate=v0.4.1
+protoc-gen-atlas-validate=v0.4.2
 protoc-gen-preprocess=v1.0.1