Update srcinfo.yml

.github/workflows/srcinfo.yml

@@ -23,7 +23,7 @@ jobs:
 
       - name: Run
         run: |
-          for i in $(git diff --name-only ${{ github.event.pull_request.base.sha }} ${{ github.event.pull_request.head.sha }} | grep -E '^packages/[^/]+/[^/]+\.pacscript$'); do
+          for i in $(git diff --name-only HEAD~1 | grep -E '^packages/[^/]+/[^/]+\.pacscript$'); do
             ./srcinfo.sh "$i" | tee ${i%/*.pacscript}/.SRCINFO > /dev/null
           done
           rm ./srcinfo.sh