disable this step since it doesnt work for windows (#1403)

and the other step where the variable is used isn't run on
windows either

Author: PGijsbers

.github/workflows/test.yml

@@ -89,6 +89,7 @@ jobs:
         pip install scipy==${{ matrix.scipy }}
     - name: Store repository status
       id: status-before
+      if: matrix.os != 'windows-latest'
       run: |
         git_status=$(git status --porcelain -b)
         echo "BEFORE=$git_status" >> $GITHUB_ENV