Update scheduler config for diffusers for trailing timestep

scheduler/scheduler_config.json

@@ -15,5 +15,7 @@
   "steps_offset": 1,
   "thresholding": false,
   "trained_betas": null,
+  "timestep_spacing": "trailing",
+  "rescale_betas_zero_snr": true,
   "variance_type": "fixed_small"
 }