chore(ci): pin reusable workflow refs to @v1 #57

Job	Run time
Python Type Checking (mypy)	17s
Python Linting (ruff)	14s
Windows diagram-dot	3m 46s
Windows core-only	3m 17s
Diagram Render Smoke	1m 24s
Strict dimensional validation	1m 35s
Linux yaml	1m 58s
Linux json	1m 36s
Linux server-enabled	50m 35s
Linux core-only	1m 35s
Linux diagram-dot	1m 50s
	1h 8m 7s

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