[Submodule][FlashAttention] Bump to 2.7.4 (pytorch#148147)

drisspg · pytorchmergebot · commit 3a69dee955f2 · 2025-02-28T22:40:02.000Z
# Summary This makes me happy Pull Request resolved: pytorch#148147 Approved by: https://github.com/Skylion007
diff --git a/third_party/flash-attention b/third_party/flash-attention
@@ -1 +1 @@
-Subproject commit 6b1d059eda21c1bd421f3d352786fca2cab61954
+Subproject commit 979702c87a8713a8e0a5e9fee122b90d2ef13be5
