Upgrade to Db2 Jdbc 11.5.5.0

Closes gh-24355

Author: snicoll

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -55,7 +55,7 @@
 		<couchbase-client.version>2.7.18</couchbase-client.version>
 		<couchbase-cache-client.version>2.1.0</couchbase-cache-client.version>
 		<dependency-management-plugin.version>1.0.10.RELEASE</dependency-management-plugin.version>
-		<db2-jdbc.version>11.5.4.0</db2-jdbc.version>
+		<db2-jdbc.version>11.5.5.0</db2-jdbc.version>
 		<derby.version>10.14.2.0</derby.version>
 		<dropwizard-metrics.version>4.1.14</dropwizard-metrics.version>
 		<ehcache.version>2.10.6</ehcache.version>