fixes

Author: eregon

.github/workflows/check-new-windows-versions.yml

@@ -29,11 +29,16 @@ jobs:
       uses: peter-evans/create-pull-request@v8
       id: pr
       with:
-        base: master
-        branch: windows
+        push-to-fork: ruby-builder-bot/setup-ruby
+        author: ruby-builder-bot <98265520+ruby-builder-bot@users.noreply.github.com>
+        committer: ruby-builder-bot <98265520+ruby-builder-bot@users.noreply.github.com>
         title: Update CRuby releases on Windows
         commit-message: Update CRuby releases on Windows
         body: Automated PR
+        base: master
+        branch: windows
+        delete-branch: true
+        token: ${{ secrets.PR_FROM_RUBY_BUILDER_TOKEN }}
 
     - if: ${{ steps.diff.outcome == 'failure' }} # changed
       name: PR URL