Update example to Hazelcast 5.x and Spring Boot 3.x#119

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Commits on Jul 23, 2024

code migrated to Hazelcast 5.x and Spring Boot 3.x
Andrea Del Bene
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fixed dependency problem
Andrea Del Bene
committed
Doc updated to Hazelcast 5.3.* and Spring Boot 3.2.x
Andrea Del Bene
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