Upgrade to Commons Pool 2.9.0.

Closes #1954.

Author: mp911de

pom.xml

@@ -21,7 +21,7 @@
 		<jta>1.1</jta>
 		<beanutils>1.9.2</beanutils>
 		<xstream>1.4.15</xstream>
-		<pool>2.7.0</pool>
+		<pool>2.9.0</pool>
 		<lettuce>6.0.2.RELEASE</lettuce>
 		<jedis>3.5.1</jedis>
 		<multithreadedtc>1.01</multithreadedtc>