gh-149017: Upgrade bundled Expat to 2.8.0 #190370

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6 warnings

Already linked: /opt/homebrew/Cellar/tcl-tk/9.0.3

openssl@3.5 was installed but not linked because openssl@3 and openssl@3 are already linked. To link this version, run: brew link openssl@3.5

`$HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` is set: not checking for outdated dependents or dependents with broken linkage!

gdbm 1.26 is already installed and up-to-date. To reinstall 1.26, run: brew reinstall gdbm

xz 5.8.3 is already installed and up-to-date. To reinstall 5.8.3, run: brew reinstall xz

pkgconf 2.5.1 is already installed and up-to-date. To reinstall 2.5.1, run: brew reinstall pkgconf