Azure Spring App no longer starts without snakeyaml dependency

[villaratio]

Describe the bug
We get an IllegalStateException during startup and the service fails to start, however the same code and config was able to start not so long ago.
This regression is probably caused by the recent addition of two configuration files which are automatically added by Azure to SPRING_CONFIG_ADDITIONAL_LOCATION environment variable (etc/azure-spring-cloud/context/azure-spring-apps.yml and /etc/azure-spring-cloud/context/azure-spring-apps-deployment.yml)

java.lang.IllegalStateException: Attempted to load Config resource 'file [/etc/azure-spring-cloud/context/azure-spring-apps-deployment.yml]' via location 'file:/etc/azure-spring-cloud/context/azure-spring-apps-deployment.yml' but snakeyaml was not found on the classpath

To Reproduce
Deploy a SpringBoot application without the org.yaml::snakeyaml dependency (i.e. by excluding it)

Expected behavior
A service does not require snakeyaml as dependency.

Could you not as an alternative define the configuration using good old properties files? Spring can process properties files without any additional dependencies.

[yuwzho]

We are changing it to properties file instead of yaml file.