Update dependency com.atomikos:transactions-jdbc to v6

Author: renovate[bot]

pom.xml

@@ -160,7 +160,7 @@
     <dependency>
       <groupId>com.atomikos</groupId>
       <artifactId>transactions-jdbc</artifactId>
-      <version>5.0.9</version>
+      <version>6.0.0</version>
       <scope>test</scope>
     </dependency>