fix: improve yaml decoder performance.

Author: everaldorodrigo

src/tests/test_handler.py

@@ -211,7 +211,7 @@ def test_get_one(self):
         assert res.get("info", {}).get("title", "") == "MyChem.info API"
 
         res = self.request("/api/metadata/" + MYGENE_ID + "?format=yaml")
-        yaml.load(res.text, Loader=yaml.SafeLoader)
+        yaml.load(res.text, Loader=yaml.CLoader)
 
     def test_get_all(self):
         res = self.request("/api/metadata/", method="GET").json()

src/utils/decoder.py

@@ -15,7 +15,7 @@
 
 def to_yaml(stream):
     try:
-        data = yaml.load(stream, Loader=yaml.SafeLoader)
+        data = yaml.load(stream, Loader=yaml.CLoader)
     except (yaml.scanner.ScannerError, yaml.parser.ParserError) as err:
         raise ValueError(str(err)) from err
     if not isinstance(data, dict):