Validate that deny-packages purls are complete

src/schemas.ts

@@ -18,6 +18,12 @@ const PackageURL = z
         message: `Error parsing package-url: ${purl.error}`
       })
     }
+    if (!purl.name) {
+      context.addIssue({
+        code: z.ZodIssueCode.custom,
+        message: `Error parsing package-url: name is required`
+      })
+    }
   })
 
 const PackageURLWithNamespace = z