fix: Use old install script for Windows targets

Ideally we would use the official source, but there's an
open issue (looks like it might be a wontfix) here
python-poetry/install.python-poetry.org#46
that's causing issues for Windows users

main.sh

@@ -8,7 +8,12 @@ YELLOW="\033[33m"
 RESET="\033[0m"
 
 INSTALLATION_SCRIPT="$(mktemp)"
-curl -sSL https://install.python-poetry.org/ --output "$INSTALLATION_SCRIPT"
+
+if [ "${RUNNER_OS}" == "Windows" ]; then
+  curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/48339106eb0d403a3c66519317488c8185844b32/install-poetry.py --output "$INSTALLATION_SCRIPT"
+else
+  curl -sSL https://install.python-poetry.org/ --output "$INSTALLATION_SCRIPT"
+fi
 
 echo -e "\n${YELLOW}Setting Poetry installation path as $INSTALL_PATH${RESET}\n"
 echo -e "${YELLOW}Installing Poetry 👷${RESET}\n"