startStatement() should not be required in Neo4jItemReader

[hadiyarajesh]

Bug description
In Neo4jItemReaderBuilder, startStatement(String startStatement) is required, but Neo4j itself deprecated the START statement and throw error when used. If not used, application will throw BeanCreationException with message java.lang.IllegalArgumentException: startStatement is required.

Environment
Spring Boot: 2.7.0
Kotlin: 1.6.10
Neo4j: 4.4.4

Steps to reproduce

@Bean
    fun postReader(): ItemReader<Post> {
        return Neo4jItemReaderBuilder<Post>()
            .name("postReader")
            .sessionFactory(getSessionFactory())
            .startStatement("")
            .matchStatement("(p:Post)")
            .returnStatement("p")
            .targetType(Post::class.java)
            .pageSize(1000)
            .build()
    }

Expected behavior
startStatement() should be optional, not mandatory.

[fmbenhassine]

Neo4jItemReader was deprecated v5.0 in favor of the item reader from https://github.com/spring-projects/spring-batch-extensions/blob/main/spring-batch-neo4j. I will transfer this issue to the tracker of the extensions repository.