Update Java requirement in CONTRIBUTING.md

Upgrade to Spring Boot 2.7.17 and managed dependencies

Upgrades the following as well:
* micrometer 1.9.16
* netty 4.1.100
* reactor-netty 1.0.38
* reactor 3.4.33

Closes gh-75

Upgrade to snappy-java 1.1.10.1

Closes gh-73

Write dependency locks

Closes gh-69

Block up to 1 second for final fire and forget on close

The Mono returned before from the Bean destroyMethod would not be subscribed to, and therefore nothing would happen on destroying the bean. Now we will wait up to 1 second for the fire and forget final scrape to be sent on close.

Resolves gh-35