Bump com.hazelcast:hazelcast from 5.3.8 to 5.6.0 in /start

Bumps [com.hazelcast:hazelcast](https://github.com/hazelcast/hazelcast) from 5.3.8 to 5.6.0.
- [Release notes](https://github.com/hazelcast/hazelcast/releases)
- [Commits](hazelcast/hazelcast@v5.3.8...v5.6.0)

---
updated-dependencies:
- dependency-name: com.hazelcast:hazelcast
  dependency-version: 5.6.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

start/pom.xml

@@ -38,7 +38,7 @@
         <dependency>
             <groupId>com.hazelcast</groupId>
             <artifactId>hazelcast</artifactId>
-            <version>5.3.8</version>
+            <version>5.6.0</version>
             <scope>test</scope>
         </dependency>