ci: bump ansys actions to v8 #184

Job	Run time
Code style	36s
Documentation	1m 41s
Build and Smoke tests (ubuntu-latest, 3.8)	18s
Build and Smoke tests (ubuntu-latest, 3.9)	10s
Build and Smoke tests (ubuntu-latest, 3.10)	15s
Build and Smoke tests (ubuntu-latest, 3.11)	10s
Build and Smoke tests (ubuntu-latest, 3.12)	18s
Build and Smoke tests (windows-latest, 3.8)	1m 4s
Build and Smoke tests (windows-latest, 3.9)	1m 13s
Build and Smoke tests (windows-latest, 3.10)	54s
Build and Smoke tests (windows-latest, 3.11)	1m 2s
Build and Smoke tests (windows-latest, 3.12)	58s
Run unit tests (3.8)	23s
Run unit tests (3.9)	19s
Run unit tests (3.10)	17s
Run unit tests (3.11)	21s
Run unit tests (3.12)	18s
Package library	0s
Upload documentation	0s
	10m 17s

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