Update facebook/pysa-action digest to 15c7aea

Author: renovate[bot]

.github/workflows/pysa.yml

@@ -40,7 +40,7 @@ jobs:
           submodules: true
 
       - name: Run Pysa
-        uses: facebook/pysa-action@f46a63777e59268613bd6e2ff4e29f144ca9e88b
+        uses: facebook/pysa-action@15c7aea01cff64049bafe04fac871bd2cb50df56
         with:
           # To customize these inputs:
           # See https://github.com/facebook/pysa-action#inputs