Swap Guava Cache for a Spring CacheManager supported implementation

[dekobon]

The Java applications balance-reader and transaction-history use Guava for caching. However, since Guava's cache is manually instantiated it is not integrated into Spring's lifecycle there is no support for it in the liveness probes.

See: https://docs.spring.io/spring-boot/docs/1.5.22.RELEASE/reference/html/boot-features-caching.html