fix: trivy warning cve-2022-1471

Issue #91

This change simply change the required version by spring boot of this
dependency. You can learn more about it here:

- spring-projects/spring-boot#32221
- https://avd.aquasec.com/nvd/2022/cve-2022-1471/

backend/pom.xml

@@ -39,6 +39,7 @@
     <sonar.organization>bcgov-sonarcloud</sonar.organization>
     <sonar.host.url>https://sonarcloud.io</sonar.host.url>
     <oci.revision>${project.version}</oci.revision>
+    <snakeyaml.version>2.2</snakeyaml.version>
   </properties>
 
   <profiles>