[CI] workaround to fix Windows CI

Author: ericdallo

.github/workflows/test.yml

@@ -56,6 +56,10 @@ jobs:
                   python-version: "3.6"
                   architecture: "x64"
 
+            - name: Set workaround env var
+              run: |
+                echo "ACTIONS_ALLOW_UNSECURE_COMMANDS=true" >> $GITHUB_ENV
+
             - uses: jcs090218/setup-emacs-windows@v3
               with:
                 version: ${{ matrix.emacs-version }}