Bump python-slugify from 8.0.3 to 8.0.4

Bumps [python-slugify](https://github.com/un33k/python-slugify) from 8.0.3 to 8.0.4.
- [Changelog](https://github.com/un33k/python-slugify/blob/master/CHANGELOG.md)
- [Commits](un33k/python-slugify@v8.0.3...v8.0.4)

---
updated-dependencies:
- dependency-name: python-slugify
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -1,3 +1,3 @@
 amcrest==1.9.8
 paho-mqtt==1.6.1
-python-slugify==8.0.3
+python-slugify==8.0.4