Update requirements.txt

Author: rcpeene

requirements.txt

@@ -26,7 +26,7 @@ ssm @ git+https://github.com/lindermanlab/ssm
 statsmodels==0.14.0
 suite2p==0.12.1
 tensortools==0.4
-torch==1.13
+torch
 traitlets==5.6.0
 tqdm==4.66.2
 zarr==2.13.3