Bump primefaces from 5.0 to 6.0 in /TodoSyncServer

Bumps [primefaces](https://github.com/primefaces/primefaces) from 5.0 to 6.0. - [Release notes](https://github.com/primefaces/primefaces/releases) - [Commits](https://github.com/primefaces/primefaces/commits) --- updated-dependencies: - dependency-name: org.primefaces:primefaces dependency-type: direct:production ... Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

TodoSyncServer/pom.xml

@@ -57,7 +57,7 @@
 <dependency>
 <groupId>org.primefaces</groupId>
 <artifactId>primefaces</artifactId>
-<version>5.0</version>
+<version>6.0</version>
 </dependency>
 
 <!-- "Jackson, Jr" for JSON; used in tests -->