restore prework in ci

Author: timkpaine

.github/workflows/build.yml

@@ -22,6 +22,9 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
+    - name: Prework
+      run: touch pyproject.toml
+
     - name: Setup Python
       uses: actions-ext/python/setup@main
       with: