CI: Fix documentation build of serdes example #2372

Job	Run time
Test dotnet (windows)	10m 22s
Build and Smoke tests (ubuntu-latest \| Python 3.8)	35s
Build and Smoke tests (ubuntu-latest \| Python 3.9)	47s
Check the title of the pull request	2s
Build and Smoke tests (ubuntu-latest \| Python 3.10)	35s
Build documentation	1h 42m 7s
Build and Smoke tests (ubuntu-latest \| Python 3.11)	38s
Build and Smoke tests (windows-latest \| Python 3.8)	1m 58s
Documentation style check	15s
Build and Smoke tests (windows-latest \| Python 3.9)	1m 56s
Build and Smoke tests (windows-latest \| Python 3.10)	2m 45s
Build and Smoke tests (windows-latest \| Python 3.11)	2m 30s
Test dotnet (linux)	6m 33s
Testing PyAEDT main branch (Windows)	0s
Testing PyAEDT main branch (Linux)	0s
Package library	1s
Release project	1s
Upload dev documentation	1s
Upload release documentation	1s
Deploy dev index docs	1s
Deploy stable docs index	1s
	2h 11m 9s

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