Was asked to updated the sample_size to 64

FutureWarning: The configuration file of the unet has set the default `sample_size` to smaller than 64 which seems highly unlikely .If you're checkpoint is a fine-tuned version of any of the following:
- CompVis/stable-diffusion-v1-4
- CompVis/stable-diffusion-v1-3
- CompVis/stable-diffusion-v1-2
- CompVis/stable-diffusion-v1-1
- runwayml/stable-diffusion-v1-5
- runwayml/stable-diffusion-inpainting
you should change 'sample_size' to 64 in the configuration file. Please make sure to update the config accordingly as leaving `sample_size=32` in the config might lead to incorrect results in future versions. If you have downloaded this checkpoint from the Hugging Face Hub, it would be very nice if you could open a Pull request for the `unet/config.json` file

unet/config.json

@@ -26,7 +26,7 @@
   "norm_eps": 1e-05,
   "norm_num_groups": 32,
   "out_channels": 4,
-  "sample_size": 32,
+  "sample_size": 64,
   "up_block_types": [
     "UpBlock2D",
     "CrossAttnUpBlock2D",