Upgrade to MongoDB 4.2.2 in JDK 8 test build.

Author: gregturn

pom.xml

@@ -76,7 +76,7 @@
 		<jsr305.version>3.0.2</jsr305.version>
 		<junit-bom.version>5.7.1</junit-bom.version>
 		<mockito.version>2.28.2</mockito.version>
-		<mongo.version>4.2.0</mongo.version>
+		<mongo.version>4.2.2</mongo.version>
 		<java-module-name>spring.session.data.mongodb</java-module-name>
 		<reactor-bom.version>2020.0.6</reactor-bom.version>
 		<spring-bom.version>5.3.6</spring-bom.version>