[torchdynamo hash update] update the pinned torchdynamo hash (#80112)

This PR is auto-generated nightly by [this action](https://github.com/pytorch/pytorch/blob/master/.github/workflows/_update-commit-hash.yml).
Update the pinned torchdynamo hash.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/80112
Approved by: https://github.com/pytorchbot, https://github.com/malfet
diff --git a/.github/ci_commit_pins/torchdynamo.txt b/.github/ci_commit_pins/torchdynamo.txt
index 7f3de67..9982611 100644
--- a/.github/ci_commit_pins/torchdynamo.txt
+++ b/.github/ci_commit_pins/torchdynamo.txt
@@ -1 +1 @@
-2d43de8576e47a1d7f287011f14a55e93b568428
+a3f300860a71134533c49fb99a983d222d5c94c0