Pin opacus to 1.5.3 on opacus_cifar10 model (#2620)

Summary:
Related to pytorch/pytorch#154446

Pull Request resolved: #2620

Reviewed By: huydhn, malfet

Differential Revision: D75477504

Pulled By: atalman

fbshipit-source-id: 840eec97ff9ab9e12d4cc91bf91333a0f3247e12

Author: atalman

torchbenchmark/models/opacus_cifar10/requirements.txt

@@ -1,3 +1,4 @@
 git+https://github.com/pytorch/functorch.git
 # must include the fix https://github.com/pytorch/opacus/pull/426
-opacus>=1.1.2
+# Pinning to 1.5.3. Remove once is resolved https://github.com/pytorch/pytorch/issues/154446
+opacus>=1.1.2,<1.5.4