Update esrgan_model.py

Use alternate ESRGAN Model download path.

modules/esrgan_model.py

@@ -73,8 +73,8 @@ def fix_model_layers(crt_model, pretrained_net):
 class UpscalerESRGAN(Upscaler):
     def __init__(self, dirname):
         self.name = "ESRGAN"
-        self.model_url = "https://drive.google.com/u/0/uc?id=1TPrz5QKd8DHHt1k8SRtm6tMiPjz_Qene&export=download"
-        self.model_name = "ESRGAN 4x"
+        self.model_url = "https://github.com/cszn/KAIR/releases/download/v1.0/ESRGAN.pth"
+        self.model_name = "ESRGAN_4x"
         self.scalers = []
         self.user_path = dirname
         self.model_path = os.path.join(models_path, self.name)