update dev deps(deps-dev): bump the python-packages group with 4 updates

Bumps the python-packages group with 4 updates: [lxml](https://github.com/lxml/lxml), [black](https://github.com/psf/black), [mypy](https://github.com/python/mypy) and [pytest](https://github.com/pytest-dev/pytest).


Updates `lxml` from 4.9.3 to 5.1.0
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-4.9.3...lxml-5.1.0)

Updates `black` from 23.11.0 to 23.12.1
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@23.11.0...23.12.1)

Updates `mypy` from 1.7.1 to 1.8.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.7.1...v1.8.0)

Updates `pytest` from 7.4.3 to 7.4.4
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.4.3...7.4.4)

---
updated-dependencies:
- dependency-name: lxml
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: python-packages
- dependency-name: black
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: mypy
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: pytest
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
...

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -19,7 +19,7 @@ classifiers = [
     "Operating System :: OS Independent",
 ]
 dependencies = [
-    "lxml==4.9.3",
+    "lxml==5.1.0",
     "lxml-stubs==0.4.0",
     "termcolor==2.4.0",
     "pyhumps==3.8.0",
@@ -31,7 +31,7 @@ dependencies = [
 "Source" = "https://github.com/OliverKillane/xmlable"
 
 [project.optional-dependencies]
-dev = ["black==23.11.0", "mypy==1.7.1", "pytest==7.4.3"]
+dev = ["black==23.12.1", "mypy==1.8.0", "pytest==7.4.4"]
 
 [tool.pytest.ini_options]
 minversion = "6.0"