build(deps): bump sphinx from 7.2.6 to 8.1.3 #581

Job	Run time
Build docs	2m 6s
Code style	53s
Build and smoke tests (ubuntu-latest, 3.10)	48s
Build and smoke tests (ubuntu-latest, 3.11)	1m 0s
Build and smoke tests (ubuntu-latest, 3.12)	1m 6s
Build and smoke tests (windows-latest, 3.10)	4m 3s
Build and smoke tests (windows-latest, 3.11)	3m 28s
Build and smoke tests (windows-latest, 3.12)	3m 12s
Testing (ubuntu-latest, 3.10)	44m 24s
Testing (ubuntu-latest, 3.11)	37m 55s
Testing (ubuntu-latest, 3.12)	39m 28s
Package library	24s
Teams notify on failure	0s
Upload dev documentation	0s
Release project	0s
Upload release documentation	0s
	2h 18m 47s

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