Upgrade k-diffusion to Release 0.0.15 to get access to DPM++ (2M) SDE sampler. (#537)

Closes issue #536

services/AUTOMATIC1111/Dockerfile

@@ -12,7 +12,7 @@ RUN . /clone.sh CodeFormer https://github.com/sczhou/CodeFormer.git c5b4593074ba
   && rm -rf assets inputs
 
 RUN . /clone.sh BLIP https://github.com/salesforce/BLIP.git 48211a1594f1321b00f14c9f7a5b4813144b2fb9
-RUN . /clone.sh k-diffusion https://github.com/crowsonkb/k-diffusion.git 5b3af030dd83e0297272d861c19477735d0317ec
+RUN . /clone.sh k-diffusion https://github.com/crowsonkb/k-diffusion.git c9fe758757e022f05ca5a53fa8fac28889e4f1cf
 RUN . /clone.sh clip-interrogator https://github.com/pharmapsychotic/clip-interrogator 2486589f24165c8e3b303f84e9dbbea318df83e8