Silence warning from installation

Before this change, we were seeing a warning when these lines were run:

    WARNING: --strip-extras is becoming the default in version 8.0.0. To
    silence this warning, either use --strip-extras to opt into the new
    default or use --no-strip-extras to retain the existing behavior.

makefile

@@ -27,20 +27,20 @@ lint: format style typing
 .PHONY:update
 update:
 	pip-compile pyproject.toml \
-		--quiet --upgrade --resolver=backtracking \
+		--quiet --upgrade --resolver=backtracking --strip-extras \
 		--extra=dev \
 		--output-file=requirements/development.txt
 	pip-compile pyproject.toml \
-		--quiet --upgrade --resolver=backtracking \
+		--quiet --upgrade --resolver=backtracking --strip-extras \
 		--extra=pytest-in-tox \
 		--output-file=requirements/pytest-in-tox.txt \
 		--unsafe-package django
 	pip-compile pyproject.toml \
-		--quiet --upgrade --resolver=backtracking \
+		--quiet --upgrade --resolver=backtracking --strip-extras \
 		--extra=release \
 		--output-file=requirements/release.txt
 	pip-compile pyproject.toml \
-		--quiet --upgrade --resolver=backtracking \
+		--quiet --upgrade --resolver=backtracking --strip-extras \
 		--extra=tox \
 		--output-file=requirements/tox.txt
 
@@ -60,7 +60,7 @@ install_prerequisites: requirements/prerequisites.txt
 # Add new dependencies to requirements/development.txt whenever pyproject.toml changes
 requirements/development.txt: pyproject.toml
 	pip-compile pyproject.toml \
-		--quiet --resolver=backtracking \
+		--quiet --resolver=backtracking --strip-extras \
 		--extra=dev \
 		--output-file=requirements/development.txt
 

requirements/development.txt

@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
-#    pip-compile --extra=dev --output-file=requirements/development.txt pyproject.toml
+#    pip-compile --extra=dev --output-file=requirements/development.txt --strip-extras pyproject.toml
 #
 asgiref==3.8.1
     # via

requirements/pytest-in-tox.txt

@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
-#    pip-compile --extra=pytest-in-tox --output-file=requirements/pytest-in-tox.txt --unsafe-package=django pyproject.toml
+#    pip-compile --extra=pytest-in-tox --output-file=requirements/pytest-in-tox.txt --strip-extras --unsafe-package=django pyproject.toml
 #
 asgiref==3.8.1
     # via

requirements/release.txt

@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
-#    pip-compile --extra=release --output-file=requirements/release.txt pyproject.toml
+#    pip-compile --extra=release --output-file=requirements/release.txt --strip-extras pyproject.toml
 #
 click==8.1.7
     # via typer

requirements/tox.txt

@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
-#    pip-compile --extra=tox --output-file=requirements/tox.txt pyproject.toml
+#    pip-compile --extra=tox --output-file=requirements/tox.txt --strip-extras pyproject.toml
 #
 cachetools==5.3.3
     # via tox