EXP: [CI] Remove brew update #59076

Job	Run time
ARM64 macOS 14 Python 3	30m 39s
AMD64 macOS 15-intel Python 3	21m 19s
AMD64 Conda Python 3.13 Pandas latest	10m 41s
AMD64 Conda Python 3.12 without NumPy	8m 12s
AMD64 Conda Python 3.11 Sphinx & Numpydoc	19m 48s
AMD64 Conda Python 3.11 Without Pandas	9m 18s
AMD64 Windows 2022 Python 3.13	11m 40s
AMD64 Conda Python 3.10 Pandas 1.3.4	11m 29s
	2h 3m 6s

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