bpo-35807: Upgrade ensurepip bundled pip and setuptools (GH-12189)

* Update pip to 19.0.3
* Update setuptools to 40.8.0
(cherry picked from commit 01e0f43)

Co-authored-by: Pradyun Gedam <[email protected]>

Author: miss-islington

Lib/ensurepip/__init__.py

@@ -8,9 +8,9 @@
 __all__ = ["version", "bootstrap"]
 
 
-_SETUPTOOLS_VERSION = "40.6.2"
+_SETUPTOOLS_VERSION = "40.8.0"
 
-_PIP_VERSION = "18.1"
+_PIP_VERSION = "19.0.3"
 
 _PROJECTS = [
     ("setuptools", _SETUPTOOLS_VERSION),

Lib/ensurepip/_bundled/pip-18.1-py2.py3-none-any.whl renamed to Lib/ensurepip/_bundled/pip-19.0.3-py2.py3-none-any.whl

@@ -0,0 +1 @@
+Update ensurepip to install pip 19.0.3 and setuptools 40.8.0.