Upgrade to Hikaricp 2.5.1

Closes gh-7831

spring-boot-dependencies/pom.xml

@@ -86,7 +86,7 @@
 		<hazelcast-hibernate5.version>1.1.3</hazelcast-hibernate5.version>
 		<hibernate.version>5.0.11.Final</hibernate.version>
 		<hibernate-validator.version>5.2.4.Final</hibernate-validator.version>
-		<hikaricp.version>2.4.7</hikaricp.version>
+		<hikaricp.version>2.5.1</hikaricp.version>
 		<hikaricp-java6.version>2.3.13</hikaricp-java6.version>
 		<hsqldb.version>2.3.3</hsqldb.version>
 		<htmlunit.version>2.23</htmlunit.version>