fix: Install pip and pip-tools in upgrade script (#937)

Co-authored-by: Jawayria <39649635+Jawayria@users.noreply.github.com>

Author: edx-requirements-bot

Makefile

@@ -135,7 +135,10 @@ requirements: ## install development environment requirements
 upgrade: export CUSTOM_COMPILE_COMMAND=make upgrade
 upgrade: ## Upgrade requirements with pip-tools.
 	pip install -qr requirements/pip-tools.txt
+	pip-compile --allow-unsafe --rebuild --upgrade -o requirements/pip.txt requirements/pip.in
 	pip-compile --upgrade -o requirements/pip-tools.txt requirements/pip-tools.in
+	pip install -qr requirements/pip.txt
+	pip install -qr requirements/pip-tools.txt
 	pip-compile --upgrade -o requirements/base.txt requirements/base.in
 	pip-compile --upgrade -o requirements/doc.txt requirements/doc.in
 	pip-compile --upgrade -o requirements/test.txt requirements/test.in

requirements/pip.in

@@ -0,0 +1,7 @@
+-c constraints.txt
+# Core dependencies for installing other packages
+
+pip
+setuptools
+wheel
+

requirements/pip.txt

@@ -0,0 +1,16 @@
+#
+# This file is autogenerated by pip-compile with python 3.8
+# To update, run:
+#
+#    make upgrade
+#
+wheel==0.37.1
+    # via -r requirements/pip.in
+
+# The following packages are considered to be unsafe in a requirements file:
+pip==22.1.2
+    # via -r requirements/pip.in
+setuptools==59.8.0
+    # via
+    #   -c https://raw.githubusercontent.com/edx/edx-lint/master/edx_lint/files/common_constraints.txt
+    #   -r requirements/pip.in