Update tools/vcpkg submodule to 2026.04.27 release

bmehta001 · Copilot · bmehta001 · commit 91520cf67d32 · 2026-06-02T00:22:19.000-05:00
The previous submodule pin (2022.02.02) cannot find Visual Studio 2026 (VS 18) and rejects local vcpkg builds with 'Unable to find a valid Visual Studio instance'. Update to the 2026.04.27 release so the bundled vcpkg supports VS 2026 toolchains.

Validated by running tests/vcpkg/test-vcpkg-windows.ps1 with VS 2026, x64-windows-static triplet: vcpkg installed mstelemetry from the pinned GitHub SHA together with sqlite3, zlib, and nlohmann-json, the consumer linked, and all 7 integration assertions passed.

Co-authored-by: Copilot &lt;223556219+Copilot@users.noreply.github.com&gt;
diff --git a/tools/vcpkg b/tools/vcpkg
@@ -1 +1 @@
-Subproject commit 16d13ffc54cec8c05374fc20bd48cbb14ecc974d
+Subproject commit 56bb2411609227288b70117ead2c47585ba07713
