Bump 3rdparty/vcpkg from bf79851 to 4b222f8 (Mudlet#4346)

Bumps [3rdparty/vcpkg](https://github.com/microsoft/vcpkg) from `bf79851` to `4b222f8`.
- [Release notes](https://github.com/microsoft/vcpkg/releases)
- [Commits](microsoft/vcpkg@bf79851...4b222f8)

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