add windows build step, 4

.gitlab-ci.yml

@@ -99,6 +99,7 @@ build-windows-binary:
     - if: '$CI_COMMIT_TAG'
   script:
     - |
+      cd src
       & 'C:\Program Files\Python313\python.exe' -m venv venv
       .\venv\Scripts\pip.exe install --upgrade pip
       .\venv\Scripts\pip.exe install -r requirements.txt