Bump github.com/microsoft/vcpkg from master to 2025.10.17 (#6810)

Bumps [github.com/microsoft/vcpkg](https://github.com/microsoft/vcpkg) from master to 2025.10.17. This release includes the previously tagged commit.
- [Release notes](https://github.com/microsoft/vcpkg/releases)
- [Commits](4334d8b4c8...74e6536215)

---
updated-dependencies:
- dependency-name: github.com/microsoft/vcpkg
  dependency-version: 2025.10.17
  dependency-type: direct:production
...

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vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "azure-sdk-for-cpp",
   "version": "1.5.0",
-  "builtin-baseline": "4334d8b4c8916018600212ab4dd4bbdc343065d1",
+  "builtin-baseline": "74e6536215718009aae747d86d84b78376bf9e09",
   "dependencies": [
     {
       "name": "curl"