Bump github.com/microsoft/vcpkg from master to 2026.05.25 in /indra

Bumps [github.com/microsoft/vcpkg](https://github.com/microsoft/vcpkg) from master to 2026.05.25. This release includes the previously tagged commit.
- [Release notes](https://github.com/microsoft/vcpkg/releases)
- [Commits](microsoft/vcpkg@e5a4f54...d015e31)

---
updated-dependencies:
- dependency-name: github.com/microsoft/vcpkg
  dependency-version: 2026.05.25
  dependency-type: direct:production
...

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

Author: dependabot[bot]

indra/vcpkg.json

@@ -1,5 +1,5 @@
 {
-  "builtin-baseline": "e5a4f54c0d562059e9ccc6f7e7150667da58fe41",
+  "builtin-baseline": "d015e31e90838a4c9dfa3eed45979bc70d9357fc",
   "dependencies": [
     "alchemy-branding",
     "alchemy-dictionaries",
@@ -286,4 +286,4 @@
       ]
     }
   }
-}
+}