Use pip3

Author: tannewt

.github/workflows/ports_windows.yml

@@ -62,13 +62,14 @@ jobs:
         wget --no-verbose -O gcc-arm.zip https://developer.arm.com/-/media/Files/downloads/gnu-rm/10-2020q4/gcc-arm-none-eabi-10-2020-q4-major-win32.zip
         unzip -q -d /tmp gcc-arm.zip
         tar -C /tmp/gcc-arm-none-* -cf - . | tar -C /usr/local -xf -
-        pip install wheel
+        pip3 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 >= 0.16.4" "nrfutil > 6.0.0"
+        pip3 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"
+        which pip3; pip3 --version
 
     - name: Set up repository
       uses: actions/checkout@v3