Update unet/config.json

updated sample size as getting a warning "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

@@ -27,7 +27,7 @@
   "norm_eps": 1e-05,
   "norm_num_groups": 32,
   "out_channels": 4,
-  "sample_size": 32,
+  "sample_size": 64,
   "up_block_types": [
     "UpBlock2D",
     "CrossAttnUpBlock2D",