Use pip cache mecanism of actions/setup-python

      - uses: actions/setup-python@v5

        with:

          python-version: ${{ matrix.python }}

      - name: Get pip cache dir

        id: pip-cache

        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT

        shell: bash

      - name: pip cache

        uses: actions/cache@v4

        with:

          path: ${{ steps.pip-cache.outputs.dir }}

          key: ${{ runner.os }}-pip${{ matrix.python }}

          restore-keys: ${{ runner.os }}-pip${{ matrix.python }}

          cache: 'pip'

      - name: Install NumPy

        run: pip install '${{ matrix.numpy }}'

      - name: Install cpprb

            3.10

            3.11

            3.12

      - name: Get pip cache dir

        id: pip-cache

        run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT

        shell: bash

      - name: pip cache

        uses: actions/cache@v4

        with:

          path: ${{ steps.pip-cache.outputs.dir }}

          key: ${{ runner.os }}-pip

          restore-keys: ${{ runner.os }}-pip

          cache: 'pip'

      - uses: actions/download-artifact@v4

        with:

          name: README

      - uses: actions/setup-python@v5

        with:

          python-version: '3.8'

          cache: 'pip'

      - uses: actions/download-artifact@v4

        with:

          name: README

      - uses: actions/setup-python@v5

        with:

          python-version: '3'

          cache: 'pip'

      - uses: docker/setup-qemu-action@v3

        if: ${{ matrix.arch }} == "aarch64"

        with: