Update pinned rev for vcpkg to fix CI build errors

[robo9k]

The cargo vcpkg builds fail with currently pinned rev, e.g. https://github.com/robo9k/rust-magic-sys/actions/runs/23517748103/job/68453967403

Building getopt-win32:x64-windows@1.1.0.20220925...
Downloading https://github.com/xiaozhuai/getopt-win32/archive/b69a586f0b1aa37b77c3cf0a9dedba1900007678.tar.gz -> xiaozhuai-getopt-win32-b69a586f0b1aa37b77c3cf0a9dedba1900007678.tar.gz
error: https://github.com/xiaozhuai/getopt-win32/archive/b69a586f0b1aa37b77c3cf0a9dedba1900007678.tar.gz: failed: status code 404

Since the unpinned vcpkg build via setup-libmagic works, something newer will do