Bump io.agroal:agroal-pool from 2.7.1 to 2.8 (#1497)

Author: dependabot[bot]

pom.xml

@@ -108,7 +108,7 @@
     <mockito.version>4.8.0</mockito.version>
     <jackson.version>2.19.2</jackson.version>
     <vertx.version>5.0.3</vertx.version>
-    <agroal.version>2.7.1</agroal.version>
+    <agroal.version>2.8</agroal.version>
     <kafka.version>3.4.0</kafka.version>
     <flink.version>1.19.3</flink.version>
     <slf4j.version>1.7.36</slf4j.version>