Update spring batch to v5.0.2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.springframework.batch:spring-batch-test (source)	5.0.1 -> 5.0.2
org.springframework.batch:spring-batch-core (source)	5.0.1 -> 5.0.2
org.springframework.batch:spring-batch-infrastructure (source)	5.0.1 -> 5.0.2

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Configuration

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[coveralls]

Coverage: 89.599%. Remained the same when pulling a32bf4e on renovate/spring-batch into 3d20964 on master.