Downgraded and fixed torchmetrics to version 0.11.4 to avoid some err…

…ors with newest version when running the webui. (#1802)

requirements.txt

@@ -88,6 +88,7 @@ test-tube>=0.7.5
 timm==0.6.7
 torch-fidelity==0.3.0
 transformers==4.19.2 # do not change
+torchmetrics==0.11.4
 wget
 
 # Optional packages commonly used with Stable Diffusion workflow