Upgrade to Mongodb 3.6.3

Closes gh-12055

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -116,7 +116,7 @@
 		<mssql-jdbc.version>6.2.2.jre8</mssql-jdbc.version>
 		<mockito.version>2.15.0</mockito.version>
 		<mongo-driver-reactivestreams.version>1.7.0</mongo-driver-reactivestreams.version>
-		<mongodb.version>3.6.1</mongodb.version>
+		<mongodb.version>3.6.3</mongodb.version>
 		<mysql.version>5.1.45</mysql.version>
 		<narayana.version>5.7.2.Final</narayana.version>
 		<nekohtml.version>1.9.22</nekohtml.version>