Add the deprecated message in the fedramp-jab enum value (#1209)

Author: DimitriZhurkin

src/validations/constraints/fedramp-external-allowed-values.xml

@@ -69,7 +69,7 @@
             <allowed-values id="authorization-type" target="system-characteristics/prop[@name='authorization-type'][@ns='http://fedramp.gov/ns/oscal']/@value" allow-other="no" level="ERROR">
                 <formal-name>Authorization Type</formal-name>
                 <description>The FedRAMP Authorization Type</description>
-                <enum value="fedramp-jab">FedRAMP JAB P-ATO</enum>
+                <enum value="fedramp-jab" deprecated="3.0.0-milestone1">**(deprecated)*** The authorization type of 'fedramp-jab' is deprecated. Use it for pre-existing JAB authorizations only.</enum>
                 <enum value="fedramp-agency">FedRAMP Agency ATO</enum>
                 <enum value="fedramp-li-saas">FedRAMP Tailored for LI-SaaS</enum>
             </allowed-values>