Update schema validation with new tags

Author: lcartey

Diff for: schemas/rule-package.schema.json

@@ -338,7 +338,11 @@
                             "external/cert/default-disabled",
                             "external/autosar/strict",
                             "scope/single-translation-unit",
-                            "scope/system"
+                            "scope/system",
+                            "external/misra/c/2012/third-edition-first-revision",
+                            "external/misra/c/2012/amendment2",
+                            "external/misra/c/2012/amendment3",
+                            "external/misra/c/2012/amendment4"
                         ]
                     },
                     "minLength": 1