Rollback the SARIF version to 2.1 since github doesn't support 2.2 (#1210)

Change-Id: If3500ec2c522339ca0a4e6c1f58574ce3cc870a9

Signed-off-by: Cosmin Cojocar <[email protected]>

Author: ccojocar

report/sarif/data.go

@@ -16,7 +16,7 @@ const (
 	// Error : The rule specified by ruleId was evaluated and a serious problem was found.
 	Error = Level("error")
 	// Version : SARIF Schema version
-	Version = "2.2.0"
+	Version = "2.1.0"
 	// Schema : SARIF Schema URL
-	Schema = "https://raw.githubusercontent.com/oasis-tcs/sarif-spec/master/Schemata/sarif-schema-2.2.json"
+	Schema = "https://raw.githubusercontent.com/oasis-tcs/sarif-spec/master/Schemata/sarif-schema-2.1.json"
 )