CI: Use latest VS installed on runner

.github/workflows/windows_build_qt.yml

@@ -107,6 +107,13 @@ jobs:
         if: inputs.configuration != 'CMake'
         uses: microsoft/setup-msbuild@v3
 
+      - name: Locate vcvars
+        if: inputs.configuration == 'CMake'
+        shell: cmd
+        run: |
+            for /f "usebackq tokens=*" %%i in (`call vswhere -latest -property installationPath`) do set "VSINSTPATH=%%i"
+            echo VCVARSPATH=%VSINSTPATH%\VC\Auxiliary\Build\vcvars64.bat>>%GITHUB_ENV%
+
       - name: Download patches
         shell: cmd
         run: |
@@ -132,14 +139,14 @@ jobs:
         id: cmake
         shell: cmd
         run: |
-          call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+          call "%VCVARSPATH%" || exit /b
           cmake . -B build ${{ inputs.cmakeFlags }} "-DCMAKE_PREFIX_PATH=%cd%\deps" -DQT_BUILD=ON -DCMAKE_BUILD_TYPE=Release -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -DDISABLE_ADVANCE_SIMD=ON -G Ninja
 
       - name: Build PCSX2
         shell: cmd
         run: |
           if "${{ inputs.configuration }}"=="CMake" (
-            call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+            call "%VCVARSPATH%" || exit /b
             cmake --build build --config Release || exit /b
             cmake --install build --config Release || exit /b
           ) else (
@@ -152,7 +159,7 @@ jobs:
         if: inputs.configuration == 'CMake'
         shell: cmd
         run: |
-          call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+          call "%VCVARSPATH%" || exit /b
           set PATH=%PATH%;%GITHUB_WORKSPACE%\bin
           cmake --build build --config Release --target unittests