Update deprecated set-output command

Author: wravery

.github/workflows/windows.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Set target triplet
       id: set-variables
       shell: pwsh
-      run: echo "::set-output name=vcpkg_triplet::${{ matrix.arch }}-windows$(if ('${{ matrix.libs }}' -eq 'static') { '-static' })"
+      run: echo "vcpkg_triplet=${{ matrix.arch }}-windows$(if ('${{ matrix.libs }}' -eq 'static') { '-static' })" >> $env:GITHUB_OUTPUT
 
     - name: Cache vcpkg
       uses: actions/cache@v3