[PATCH v2 2/7] ci (vs-build): use `cmd` to copy the DLLs, not `powershell`

["Johannes Schindelin via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Johannes Schindelin <johannes.schindelin@xxxxxx>

We use a `.bat` script to copy the DLLs in the `vs-build` job, and those
type of scripts are native to CMD, not to PowerShell.

Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
 .github/workflows/main.yml | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index c62766e7b1a..d430c4e0d20 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -152,10 +152,8 @@ jobs:
     - name: add msbuild to PATH
       uses: microsoft/setup-msbuild@v1
     - name: copy dlls to root
-      shell: powershell
-      run: |
-        & compat\vcbuild\vcpkg_copy_dlls.bat release
-        if (!$?) { exit(1) }
+      shell: cmd
+      run: compat\vcbuild\vcpkg_copy_dlls.bat release
     - name: generate Visual Studio solution
       shell: bash
       run: |
-- 
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