Explicit pc-ble-driver-py version

Author: tannewt

.github/workflows/ports_windows.yml

@@ -65,7 +65,7 @@ jobs:
         pip install wheel
         # requirements_dev.txt doesn't install on windows. (with msys2 python)
         # instead, pick a subset for what we want to do
-        pip install cascadetoml jinja2 typer click intelhex pc-ble-driver-py "nrfutil > 6.0.0"
+        pip install cascadetoml jinja2 typer click intelhex "pc-ble-driver-py >= 0.16.4" "nrfutil > 6.0.0"
         # check that installed packages work....?
         which python; python --version; python -c "import cascadetoml"
         which python3; python3 --version; python3 -c "import cascadetoml"