Tests

Fix: support CPython free-threaded builds (3.14t) #1138

Job	Run time
Julia (1.10, ubuntu-latest, @CondaPkg 3)	2m 35s
Python (3.10, ubuntu-latest, @JuliaPkg)	1m 32s
Python (3.10, windows-latest, @JuliaPkg)	2m 42s
Python (3, macos-latest, @JuliaPkg)	1m 22s
Julia (1, ubuntu-latest, python 3.14t)	6m 9s
Julia (1, macos-latest, @CondaPkg 3)	6m 26s
Julia (1, ubuntu-latest, @CondaPkg 3)	3m 4s
Julia (1, windows-latest, @CondaPkg 3)	5m 49s
Python (3, ubuntu-latest, @JuliaPkg)	1m 39s
Julia (1, ubuntu-latest, python 3)	2m 41s
Python (3, windows-latest, @JuliaPkg)	3m 13s
Julia (1.10, macos-latest, @CondaPkg 3)	6m 16s
Python (3, ubuntu-latest, julia)	1m 35s
Python (3.14t, ubuntu-latest, @JuliaPkg)	1m 43s
Python (3.10, macos-latest, @JuliaPkg)	1m 40s
Julia (1.10, windows-latest, @CondaPkg 3)	6m 40s
	55m 6s

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