Bump ebean-test-containers to 7.15 with updated ClickHouse support

Author: rbygrave

pom.xml

@@ -48,7 +48,7 @@
     <ebean-ddl-runner.version>2.3</ebean-ddl-runner.version>
     <ebean-migration-auto.version>1.2</ebean-migration-auto.version>
     <ebean-migration.version>14.3.0</ebean-migration.version>
-    <ebean-test-containers.version>7.14</ebean-test-containers.version>
+    <ebean-test-containers.version>7.15</ebean-test-containers.version>
     <ebean-datasource.version>10.1</ebean-datasource.version>
     <ebean-agent.version>16.0.1</ebean-agent.version>
     <ebean-maven-plugin.version>16.0.1</ebean-maven-plugin.version>