Update to FlexyPool 3.0.2

[oburgosm]

FlexyPool 3 has breaking changes that made that spring-boot-data-source-decorator fail. It would be nice that this project update to FlexyPool 3.0.2:

vladmihalcea/flexy-pool#73

[gavlyukovskiy]

@oburgosm fixed in #113 and released as 1.10.0