Push/pop repo root directory from checking script

Author: dmachaj

.github/workflows/ci.yml

@@ -20,6 +20,9 @@ jobs:
           
           & "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
 
+          $originalWorkingDirectory = Get-Location
+          Set-Location ${{ github.action_path }}\..\..\
+
           & .\find_clang_format.cmd
           if ($LASTEXITCODE -ne 0) {
             exit $LASTEXITCODE
@@ -43,6 +46,8 @@ jobs:
             exit 1
           }
 
+          Set-Location $originalWorkingDirectory
+
   test-msvc-cppwinrt-build:
     name: '${{ matrix.compiler }}: Build (${{ matrix.arch }}, ${{ matrix.config }})'
     strategy: