Generate CI matrix at runtime #2293

Job	Run time
generate-matrix	10s
pythonbuild	1m 23s
aarch64-apple-darwin / 3.9 / debug	1s
aarch64-apple-darwin / 3.9 / pgo	1s
aarch64-apple-darwin / 3.9 / pgo+lto	1s
aarch64-apple-darwin / 3.10 / debug	1s
aarch64-apple-darwin / 3.10 / pgo	1s
aarch64-apple-darwin / 3.10 / pgo+lto	1s
aarch64-apple-darwin / 3.11 / debug	1s
aarch64-apple-darwin / 3.11 / pgo	1s
aarch64-apple-darwin / 3.11 / pgo+lto	1s
aarch64-apple-darwin / 3.12 / debug	1m 9s
aarch64-apple-darwin / 3.12 / pgo	1m 7s
aarch64-apple-darwin / 3.12 / pgo+lto	4m 2s
aarch64-apple-darwin / 3.13 / debug	4m 2s
aarch64-apple-darwin / 3.13 / pgo	1m 36s
aarch64-apple-darwin / 3.13 / pgo+lto	2m 52s
aarch64-apple-darwin / 3.13 / freethreaded+debug	1m 19s
aarch64-apple-darwin / 3.13 / freethreaded+pgo	2m 15s
aarch64-apple-darwin / 3.13 / freethreaded+pgo+lto	1s
x86_64-apple-darwin / 3.9 / debug	1s
x86_64-apple-darwin / 3.9 / pgo	1s
x86_64-apple-darwin / 3.9 / pgo+lto	1s
x86_64-apple-darwin / 3.10 / debug	1s
x86_64-apple-darwin / 3.10 / pgo	1s
x86_64-apple-darwin / 3.10 / pgo+lto	1s
x86_64-apple-darwin / 3.11 / debug	1s
x86_64-apple-darwin / 3.11 / pgo	1s
x86_64-apple-darwin / 3.11 / pgo+lto	1s
x86_64-apple-darwin / 3.12 / debug	1s
x86_64-apple-darwin / 3.12 / pgo	1s
x86_64-apple-darwin / 3.12 / pgo+lto	1s
x86_64-apple-darwin / 3.13 / debug	1s
x86_64-apple-darwin / 3.13 / pgo	1s
x86_64-apple-darwin / 3.13 / pgo+lto	1s
x86_64-apple-darwin / 3.13 / freethreaded+debug	1s
x86_64-apple-darwin / 3.13 / freethreaded+pgo	1s
x86_64-apple-darwin / 3.13 / freethreaded+pgo+lto	1s
	20m 23s

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