Don't install TF on Python 3.12, since there is no compatible version atm.

[tvalentyn]

fixes: #31385

[liferoad]

Not sure the failed ML test is a concern.

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[tvalentyn]

Py3.12 suite passed: https://github.com/apache/beam/actions/runs/9216485596/job/25356862179?pr=31386, other suites are not affected by this PR.