openolat#169: update jacoco maven plugin version to 0.8.5

pom.xml

@@ -880,7 +880,7 @@
 					<plugin>
 					    <groupId>org.jacoco</groupId>
 					    <artifactId>jacoco-maven-plugin</artifactId>
-					    <version>0.8.2</version>
+					    <version>0.8.5</version>
 					    <configuration>
 							<destFile>${sonar.jacoco.reportPath}</destFile>
 							<append>true</append>