Upgrading SnakeYAML and Spring Boot to address CVE-2022-1471
This upgrades the SnakeYAML dependency to be version 2.0, addressing a critical security vulnerability (CVE-2022-1471).
It required explicitly setting the dependency rather than allowing it to be inherited from Spring Boot.
Furthermore, Spring Boot 2.7.2 wasn't compatible with the SnakeYAML upgrade, so I upgraded that to 2.7.10 to pass the tests.
Closes #3
Edited by David Diederich