Merge pull request #173 from NASA-PDS/dependabot/pip/lxml-stubs-0.5.1

Bump lxml-stubs from 0.2.0 to 0.5.1

setup.cfg

@@ -98,7 +98,7 @@ dev =
     sphinx-argparse     == 0.2.5   # I don't think we even use this
     mypy-zope           == 0.3.2   # Type stubs for zope.interface
     types-pkg_resources == 0.1.3   # Type stubs for package introspection API
-    lxml-stubs          == 0.2.0   # Type stubs for lxml, duh
+    lxml-stubs          == 0.5.1   # Type stubs for lxml, duh
     flake8              == 3.9.2   # Unquestioning adherence to coding stylees
     flake8-bugbear      == 21.9.1  # Ditto
     flake8-docstrings   == 1.6.0   # And check the docstrings too