Update CI - Drop 3.8 / 3.9#428

Merged

Erotemic merged 7 commits intomainfrom

Apr 14, 2026

Commits on Mar 30, 2026

Drop 3.8, fix mypy, add ty, bump test req versions
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Commits on Apr 3, 2026

update xcookie
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fix setup
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Commits on Apr 14, 2026

Switch to trusted publishing
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Remove encrypted in-repo secrets
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reskip qemu, cleanup skip statements
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Update changelog and fix minimum version in setup.py
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