Deps: Bump the dependencies group with 6 updates

Bumps the dependencies group with 6 updates:

| Package | From | To |
| --- | --- | --- |
| [coverage](https://github.com/nedbat/coveragepy) | `7.3.3` | `7.3.4` |
| [pontos](https://github.com/greenbone/pontos) | `23.12.3` | `23.12.4` |
| [black](https://github.com/psf/black) | `23.12.0` | `23.12.1` |
| [httpx](https://github.com/encode/httpx) | `0.25.2` | `0.26.0` |
| [lxml](https://github.com/lxml/lxml) | `4.9.3` | `4.9.4` |
| [mypy](https://github.com/python/mypy) | `1.7.1` | `1.8.0` |


Updates `coverage` from 7.3.3 to 7.3.4
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.3.3...7.3.4)

Updates `pontos` from 23.12.3 to 23.12.4
- [Release notes](https://github.com/greenbone/pontos/releases)
- [Commits](greenbone/pontos@v23.12.3...v23.12.4)

Updates `black` from 23.12.0 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@23.12.0...23.12.1)

Updates `httpx` from 0.25.2 to 0.26.0
- [Release notes](https://github.com/encode/httpx/releases)
- [Changelog](https://github.com/encode/httpx/blob/master/CHANGELOG.md)
- [Commits](encode/httpx@0.25.2...0.26.0)

Updates `lxml` from 4.9.3 to 4.9.4
- [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-4.9.4)

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)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: pontos
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: black
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: httpx
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: dependencies
- dependency-name: lxml
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: dependencies
- dependency-name: mypy
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

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