continuous integration (staging)

feat: `Matrix.PosDef (A + B)` and `Matrix.PosSemidef (A + B)` (#13750) #8725

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Run time

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Job	Run time
Build	10m 54s
Lint style	42s
check workflows	9s
Cancel Previous Runs (CI)	10s
Post-CI job	12s
	12m 7s