calibre-web: fix `requests` dependency error

      --replace "lxml>=3.8.0,<4.9.0" "lxml>=3.8.0" \

      --replace "tornado>=4.1,<6.2" "tornado>=4.1,<7" \

      --replace "PyPDF>=3.0.0,<3.6.0" "PyPDF>=3.0.0" \

      --replace "requests>=2.11.1,<2.28.0" "requests" \

      --replace "requests>=2.11.1,<2.29.0" "requests" \

      --replace "unidecode>=0.04.19,<1.4.0" "unidecode>=0.04.19" \

      --replace "werkzeug<2.1.0" ""

  '';