mishap with pr fetching

Author: xyzqm

.github/workflows/update-usaco.yml

@@ -36,7 +36,7 @@ jobs:
           git config --global user.email usaco-autofetch[bot]@users.noreply.github.com
           git commit -m 'problem auto-updates'
           git push -f origin auto
-          export pr_number=$(gh pr list --json number --jq '.[0].number')
+          export pr_number=$(gh pr list --author 'usaco-autofetch[bot]' --json number --jq '.[0].number')
           if [ -z "$pr_number" ]
           then
             gh pr create --title 'Problem auto-updates' -F usaco-problems/out/report.txt