improve output of risk severity field.

[pyth0n1c]

it is now calculated using the risk score.

Note that we may apply this to confidence field as well after discussion

[patel-bhavin]

Does this code require the risk_score to be present in the yaml since we are trying to remove risk_score and convert it into a computed field as per this security content PR : https://github.com/splunk/security_content/pull/3062

[pyth0n1c]

Does this code require the risk_score to be present in the yaml since we are trying to remove risk_score and convert it into a computed field as per this security content PR : splunk/security_content#3062

No, it does not require it to be present. It USES the risk_score value, but that is a computed_field that is determined at runtime from confidence and impact.

[pyth0n1c]

Merging this PR to the release branch. As that branch has many related changes, they will all be evaluated and merged to main at the same time.