Fix config loading for jupyter environments

The current way of loading config does not work on jupyter environments such as Colab - see eladrich/pyrallis#18

app/sana_pipeline.py

@@ -77,7 +77,8 @@ def __init__(
         config: Optional[str] = "configs/sana_config/1024ms/Sana_1600M_img1024.yaml",
     ):
         super().__init__()
-        config = pyrallis.parse(config_class=SanaInference, config_path=config)
+        with open(config) as cf:
+            config = pyrallis.load(SanaInference, f)
         self.args = self.config = config
 
         # set some hyper-parameters