fix: missing AutoencoderKL lora adapter

Author: beniz

src/diffusers/models/autoencoders/autoencoder_kl.py

@@ -31,10 +31,11 @@
 )
 from ..modeling_outputs import AutoencoderKLOutput
 from ..modeling_utils import ModelMixin
+from ...loaders import PeftAdapterMixin
 from .vae import Decoder, DecoderOutput, DiagonalGaussianDistribution, Encoder
 
 
-class AutoencoderKL(ModelMixin, ConfigMixin, FromOriginalModelMixin):
+class AutoencoderKL(ModelMixin, ConfigMixin, FromOriginalModelMixin, PeftAdapterMixin):
     r"""
     A VAE model with KL loss for encoding images into latents and decoding latent representations into images.