refactor: set default value for keep_trailing_newline more idiomati…

…cally

copier/template.py

@@ -309,11 +309,10 @@ def envops(self) -> Mapping[str, Any]:
         See [envops][].
         """
         result = self.config_data.get("envops", {})
-        if "keep_trailing_newline" not in result:
-            # NOTE: we want to keep trailing newlines in templates as this is what a
-            #       user will most likely expects as a default.
-            #       See https://github.com/copier-org/copier/issues/464
-            result["keep_trailing_newline"] = True
+        # NOTE: we want to keep trailing newlines in templates as this is what a
+        #       user will most likely expects as a default.
+        #       See https://github.com/copier-org/copier/issues/464
+        result.setdefault("keep_trailing_newline", True)
         return result
 
     @cached_property