Avoid errors processing symlinked files (#1770)

Author: ssbarnea

src/ansiblelint/file_utils.py

@@ -201,7 +201,7 @@ def get(self, key: Any, default: Any = None) -> Any:
     def content(self) -> str:
         """Retried file content, from internal cache or disk."""
         if self._content is None:
-            with open(self.path, mode='r', encoding='utf-8') as f:
+            with open(self.path.resolve(), mode='r', encoding='utf-8') as f:
                 self._content = f.read()
         return self._content