Remove usage of Micrometer's global static meter registry

[fmbenhassine]

As of v5.2, Spring Batch uses the global static meter registry of Micrometer, which is an empty composite. This makes it difficult to customize and use and is not intuitive as users need to know that and have to add a registry in it.

References:

• https://stackoverflow.com/questions/64869472/spring-batch-and-boot-micrometer/64872201#64872201
• https://stackoverflow.com/questions/66659203/publishing-spring-batch-metrics-using-micrometer#comment117860896_66671397