Bump github.com/microsoft/vcpkg from master to 2026.01.16

Bumps [github.com/microsoft/vcpkg](https://github.com/microsoft/vcpkg) from master to 2026.01.16. This release includes the previously tagged commit.
- [Release notes](https://github.com/microsoft/vcpkg/releases)
- [Commits](microsoft/vcpkg@84bab45...66c0373)

---
updated-dependencies:
- dependency-name: github.com/microsoft/vcpkg
  dependency-version: 2026.01.16
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

vcpkg.json

@@ -7,5 +7,5 @@
     "openssl",
     "zlib"
   ],
-  "builtin-baseline": "84bab45d415d22042bd0b9081aea57f362da3f35"
+  "builtin-baseline": "66c0373dc7fca549e5803087b9487edfe3aca0a1"
 }