fix: cd numpy-src

Author: rgommers

.github/workflows/wheels.yml

@@ -163,6 +163,7 @@ jobs:
       - name: Build sdist
         run: |
           python -m pip install -U pip build
+          cd numpy-src
           python -m build --sdist -Csetup-args=-Dallow-noblas=true
 
       - name: Test the sdist