Add package to getting started ee (ansible#2228)

- Could not get the instructions to work on an Alma 9 minimal without
  package `python3-pip`

Author: zorrzoor

docs/docsite/rst/getting_started_ee/setup_environment.rst

@@ -10,12 +10,13 @@ Complete the following steps to set up a local environment for your first Execut
 
     * ``podman`` or ``docker``
     * ``python3``
+    * ``python3-pip``
 
     If you use the DNF package manager, install these prerequisites as follows:
 
     .. code-block:: bash
 
-       sudo dnf install -y podman python3
+       sudo dnf install -y podman python3 python3-pip
 
 #. Install ``ansible-navigator``: