doc: requirements: Add pyserial

Since 7eaca455fa, pyserial is required for
building docs because `DeviceAdapter` from the `pytest-twister-harness`
plugin, which is imported by autodoc, now depends on it.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
This commit is contained in:
Stephanos Ioannidis 2024-05-23 22:08:03 +09:00 committed by Anas Nashif
commit 8c8e2f6243

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@ -15,8 +15,9 @@ sphinx-sitemap
PyYAML>=6.0
pykwalify
# Used by pytest-twister-harness plugin
# Used by pytest-twister-harness plugin (imported by autodoc)
pytest
pyserial
# Doxygen doxmlparser
doxmlparser