[3.14] gh-152785: Upgrade Ubuntu from 24.04 to 26.04 in GitHub Actions (#152717) (#153416) - #153526

[3.14] gh-152785: Upgrade Ubuntu from 24.04 to 26.04 in GitHub Actions (#152717) (#153416)#153526

vstinner merged 4 commits into

python:3.14python/cpython:3.14from

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