Update HikariCP to 2.4.1

https://github.com/brettwooldridge/HikariCP/blob/dev/CHANGES

Author: praseodym

openid-connect-server-webapp/pom.xml

@@ -125,7 +125,7 @@
 
 <dependency>
 <groupId>com.zaxxer</groupId>
-<artifactId>HikariCP-java6</artifactId>
+<artifactId>HikariCP</artifactId>
 </dependency>
 </dependencies>
 </project>

pom.xml

@@ -534,8 +534,8 @@
 
 <dependency>
 <groupId>com.zaxxer</groupId>
-<artifactId>HikariCP-java6</artifactId>
-<version>2.3.8</version>
+<artifactId>HikariCP</artifactId>
+<version>2.4.1</version>
 </dependency>
 </dependencies>
 </dependencyManagement>