build: bump ansys-mapdl-core from 0.69.2 to 0.69.3 #1019

Job	Run time
Check library dependencies ship with valid licenses	27s
Running documentation style checks	14s
Smoke test and building	35s
Building library documentation	18m 44s
Test library (windows-latest, 3.10)	7m 44s
Test library (windows-latest, 3.11)	7m 58s
Test library (windows-latest, 3.12)	8m 4s
Test library (ubuntu-20.04, 3.10)	2m 57s
Test library (ubuntu-20.04, 3.11)	2m 30s
Test library (ubuntu-20.04, 3.12)	2m 50s
Deploy stable documentation	0s
Deploy developers documentation	0s
Release to public PyPI	0s
	52m 3s

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