fix: multiline problem matcher (#39)

.github/problem-matcher.json

@@ -14,9 +14,10 @@
           {
               "regexp": "(SC\\d+):\\s(.+)$",
               "code": 1,
-              "message": 2
+              "message": 2,
+              "loop": true
           }
-      ]
+        ]
       }
     ]
-  }
+  }