Update continuous_integration.yml

    steps:

      - name: Checkout Code

        uses: actions/checkout@v2

       - name: Cache conda

         uses: actions/cache@v2

         env:

          # Increase this value to reset cache if etc/example-environment.yml has not changed

          CACHE_NUMBER: 0

         with:

          path: ~/conda_pkgs_dir

          key:

            ${{ runner.os }}-conda-${{ env.CACHE_NUMBER }}-${{

            hashFiles('environment.yml') }}

      - name: Setup ENV

        uses: conda-incubator/setup-miniconda@v2

        with: