bpo-34556: Add --upgrade-deps to venv module (#13100)

Add --upgrade-deps to venv module
- This allows for pip + setuptools to be automatically upgraded to the latest version on PyPI
- Update documentation to represent this change

bpo-34556: Add --upgrade to venv module
diff --git a/Doc/library/venv.rst b/Doc/library/venv.rst
index 4f083a3..d3d5ae2 100644
--- a/Doc/library/venv.rst
+++ b/Doc/library/venv.rst
@@ -97,7 +97,7 @@
 
 .. class:: EnvBuilder(system_site_packages=False, clear=False, \
                       symlinks=False, upgrade=False, with_pip=False, \
-                      prompt=None)
+                      prompt=None, upgrade_deps=False)
 
     The :class:`EnvBuilder` class accepts the following keyword arguments on
     instantiation:
@@ -123,12 +123,17 @@
       (defaults to ``None`` which means directory name of the environment would
       be used).
 
+    * ``upgrade_deps`` -- Update the base venv modules to the latest on PyPI
+
     .. versionchanged:: 3.4
        Added the ``with_pip`` parameter
 
     .. versionadded:: 3.6
        Added the ``prompt`` parameter
 
+    .. versionadded:: 3.8
+       Added the ``upgrade_deps`` parameter
+
     Creators of third-party virtual environment tools will be free to use the
     provided ``EnvBuilder`` class as a base class.
 
diff --git a/Doc/using/venv-create.inc b/Doc/using/venv-create.inc
index 1ada83c..8fd107b 100644
--- a/Doc/using/venv-create.inc
+++ b/Doc/using/venv-create.inc
@@ -35,7 +35,7 @@
 The command, if run with ``-h``, will show the available options::
 
     usage: venv [-h] [--system-site-packages] [--symlinks | --copies] [--clear]
-                [--upgrade] [--without-pip] [--prompt PROMPT]
+                [--upgrade] [--without-pip] [--prompt PROMPT] [--upgrade-deps]
                 ENV_DIR [ENV_DIR ...]
 
     Creates virtual Python environments in one or more target directories.
@@ -60,10 +60,15 @@
                             environment (pip is bootstrapped by default)
       --prompt PROMPT       Provides an alternative prompt prefix for this
                             environment.
+      --upgrade-deps        Upgrade core dependencies: pip setuptools to the
+                            latest version in PyPI
 
     Once an environment has been created, you may wish to activate it, e.g. by
     sourcing an activate script in its bin directory.
 
+.. versionchanged:: 3.8
+   Add ``--upgrade-deps`` option to upgrade pip + setuptools to the latest on PyPI
+
 .. versionchanged:: 3.4
    Installs pip by default, added the ``--without-pip``  and ``--copies``
    options