Upgrade pip and setuptools (#1918)

Signed-off-by: Bernat Gabor <[email protected]>

Author: gaborbernat

docs/changelog/1918.bugfix.rst

@@ -0,0 +1 @@
+Upgrade embedded pip to ``20.2.1`` and setuptools to ``49.4.0`` - by :user:`gaborbernat`.

src/virtualenv/seed/wheels/embed/__init__.py

@@ -7,32 +7,32 @@
 BUNDLE_SUPPORT = {
     "3.10": {
         "pip": "pip-20.2.3-py2.py3-none-any.whl",
-        "setuptools": "setuptools-50.2.0-py3-none-any.whl",
+        "setuptools": "setuptools-50.3.0-py3-none-any.whl",
         "wheel": "wheel-0.35.1-py2.py3-none-any.whl",
     },
     "3.9": {
         "pip": "pip-20.2.3-py2.py3-none-any.whl",
-        "setuptools": "setuptools-50.2.0-py3-none-any.whl",
+        "setuptools": "setuptools-50.3.0-py3-none-any.whl",
         "wheel": "wheel-0.35.1-py2.py3-none-any.whl",
     },
     "3.8": {
         "pip": "pip-20.2.3-py2.py3-none-any.whl",
-        "setuptools": "setuptools-50.2.0-py3-none-any.whl",
+        "setuptools": "setuptools-50.3.0-py3-none-any.whl",
         "wheel": "wheel-0.35.1-py2.py3-none-any.whl",
     },
     "3.7": {
         "pip": "pip-20.2.3-py2.py3-none-any.whl",
-        "setuptools": "setuptools-50.2.0-py3-none-any.whl",
+        "setuptools": "setuptools-50.3.0-py3-none-any.whl",
         "wheel": "wheel-0.35.1-py2.py3-none-any.whl",
     },
     "3.6": {
         "pip": "pip-20.2.3-py2.py3-none-any.whl",
-        "setuptools": "setuptools-50.2.0-py3-none-any.whl",
+        "setuptools": "setuptools-50.3.0-py3-none-any.whl",
         "wheel": "wheel-0.35.1-py2.py3-none-any.whl",
     },
     "3.5": {
         "pip": "pip-20.2.3-py2.py3-none-any.whl",
-        "setuptools": "setuptools-50.2.0-py3-none-any.whl",
+        "setuptools": "setuptools-50.3.0-py3-none-any.whl",
         "wheel": "wheel-0.35.1-py2.py3-none-any.whl",
     },
     "3.4": {