Rotzbua

[DHCP] change return type int to uint8_t

2

return type is just positive and does not use more than 1 byte

Update dependencies according to breathe==4.35.0

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### Change * Breaking: Remove support of sphinx 3.x * Update dependencies according to breathe==4.35.0 Fixes #202

chore(exhale): remove outdated compatibility

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Min required python is 3.7.

Remove numbering. ## Credits Used `pyupgrade`. ## Future May migrate to f-strings.

## Problem Exhale fails to run with sphinx 7 because the requirements does not allow the latest exhale version to be installed: > install_requires = # From breathe==4.32.0 Sphinx>=3.0,

* Drop EOL python 3.7 * Remove sphinx

Removes warning while building: > The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, actions/cache@v1, actions/setup-python@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

Test setup was overriden by wrong spinx version. fixes #952

## Problem Installed `sphinx` version gets overridden by `pip`. For this reason the tests partially fails. ## Solution Fix order of execution.