Bump black from 22.8.0 to 24.3.0 in /python/web (#1444)

* Bump black from 22.8.0 to 24.3.0 in /python/web

Bumps [black](https://github.com/psf/black) from 22.8.0 to 24.3.0.
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](https://github.com/psf/black/compare/22.8.0...24.3.0)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

* Github CI: Backend web test runner use python 3.9.19

* Reformat python sources with black

* Docker: Bump to python 3.9-slim image for pytest

* Bump pytest version to 8.1.1

* Bump more library versions, and freeze them

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Daniel Markstedt <daniel@mindani.net>

python/oled/src/interrupt_handler.py

@@ -1,6 +1,7 @@
 """
 Linux interrupt handling module
 """
+
 import signal