skip on win

Author: Massimiliano Pippi

Diff for: .github/workflows/test.yaml

@@ -49,7 +49,7 @@ jobs:
 
       - name: Run unit tests on the legacy package
         run: task test-legacy
-        if: matrix.os != windows-latest
+        if: matrix.os != 'windows-latest'
 
       - name: Install Python
         uses: actions/setup-python@v1