build(deps): bump microsoft/setup-msbuild from 2 to 3

Bumps [microsoft/setup-msbuild](https://github.com/microsoft/setup-msbuild) from 2 to 3.
- [Release notes](https://github.com/microsoft/setup-msbuild/releases)
- [Commits](https://github.com/microsoft/setup-msbuild/compare/v2...v3)

---
updated-dependencies:
- dependency-name: microsoft/setup-msbuild
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ports_windows.yml

@@ -62,7 +62,7 @@ jobs:
         try clean_install visualstudio${{ matrix.visualstudio }}buildtools
         try clean_install visualstudio${{ matrix.visualstudio }}-workload-vctools
         try clean_install windows-sdk-8.1
-    - uses: microsoft/setup-msbuild@v2
+    - uses: microsoft/setup-msbuild@v3
       with:
         vs-version: ${{ matrix.vs_version }}
     - uses: actions/checkout@v6