Merge pull request matplotlib#24370 from meeseeksmachine/auto-backport-of-pr-24368-on-v3.6.x

Backport PR matplotlib#24368 on branch v3.6.x (DOC: Install dev dependencies before building matplotlib)

Author: timhoffm

doc/devel/development_setup.rst

@@ -86,6 +86,10 @@ The simplest way to do this is to use either Python's virtual environment
 
 Remember to activate the environment whenever you start working on Matplotlib.
 
+Install additional development dependencies
+===========================================
+See :ref:`development-dependencies`.
+
 Install Matplotlib in editable mode
 ===================================
 Install Matplotlib in editable mode from the :file:`matplotlib` directory
@@ -101,10 +105,6 @@ true for ``*.py`` files.  If you change the C-extension source (which might
 also happen if you change branches) you will have to re-run
 ``python -m pip install -ve .``
 
-Install additional development dependencies
-===========================================
-See :ref:`development-dependencies`.
-
 Install pre-commit hooks (optional)
 ===================================
 `pre-commit <https://pre-commit.com/>`_ hooks automatically check flake8 and