Add arm64 support to CI Docker builds #145

Job	Run time
Find latest pyenv version	9s
Build Python Builder Base	4m 19s
Build Python Versions (3.14, 3.14.6) / Build Python 3.14.6	1m 3s
Build Python Versions (3.11, 3.11.15) / Build Python 3.11.15	1m 3s
Build Python Versions (3.12, 3.12.13) / Build Python 3.12.13	1m 4s
Build Python Versions (3.14j, 3.14.6j) / Build Python 3.14.6j	1m 3s
Build Python Versions (3.14t, 3.14.6t) / Build Python 3.14.6t	1m 4s
Build Python Versions (3.10, 3.10.20) / Build Python 3.10.20	1m 3s
Build Python Versions (3.13t, 3.13.14t) / Build Python 3.13.14t	58s
Build Python Versions (3.13, 3.13.14) / Build Python 3.13.14	1m 5s
	12m 51s

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