Corrected the schema version for the component model.

Author: Michaela Iorga

src/metaschema/oscal_component_metaschema.xml

@@ -14,7 +14,7 @@
 <METASCHEMA xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns="http://csrc.nist.gov/ns/oscal/metaschema/1.0" xsi:schemaLocation="http://csrc.nist.gov/ns/oscal/metaschema/1.0 ../../build/metaschema-xslt/support/metaschema/schema/xml/metaschema.xsd">
   <schema-name>OSCAL Component Definition Model</schema-name>
-  <schema-version>1.1.3</schema-version>
+  <schema-version>1.2.0</schema-version>
   <short-name>oscal-component-definition</short-name>
   <namespace>http://csrc.nist.gov/ns/oscal/1.0</namespace>
   <json-base-uri>http://csrc.nist.gov/ns/oscal</json-base-uri>