[3.13] CI: Use bash to properly expand variable (GH-127822) (#127824)

miss-islington · hugovk · web-flow · commit f56da922cb51 · 2024-12-11T15:42:17.000Z
Co-authored-by: Hugo van Kemenade &lt;1324225+hugovk@users.noreply.github.com&gt;
diff --git a/.github/workflows/reusable-windows-msi.yml b/.github/workflows/reusable-windows-msi.yml
@@ -24,4 +24,5 @@ jobs:
       with:
         persist-credentials: false
     - name: Build CPython installer
-      run: .\Tools\msi\build.bat --doc -"${ARCH}"
+      run: ./Tools/msi/build.bat --doc -"${ARCH}"
+      shell: bash
