fix dependency upgrades proposed by dependabot

setup.cfg

@@ -95,7 +95,7 @@ dev =
     docutils            <= 0.16    # In 0.17 bullet lists aren't rendered at all with sphinx-rtd-theme
     sphinx              == 4.2.0   # Documentation generation
     sphinx-rtd-theme    == 0.5.0   # Documentation theme
-    sphinx-argparse     == 0.5.2   # I don't think we even use this
+    sphinx-argparse     == 0.2.5   # I don't think we even use this
     mypy-zope           == 1.0.5   # Type stubs for zope.interface
     types-pkg_resources == 0.1.3   # Type stubs for package introspection API
     lxml-stubs          == 0.5.1   # Type stubs for lxml, duh
@@ -109,7 +109,7 @@ dev =
     pytest              == 6.2.5   # Testing
     pytest-cov          == 5.0.0   # pytest + coverage = pytest-cov
     pytest-watch        == 4.2.0   # Automatic testing every time you save a file
-    pytest-xdist        == 3.6.1   # You got multiple cores, right?
+    pytest-xdist        == 2.4.0   # You got multiple cores, right?
     pre-commit          == 2.15.0  # Auto-run checks on every commit
     tox                 ~= 4.11.0  # A way to automate and standardize testing in Python
     types-requests      ~= 2.31.0.20240218