Github Action .yml files have been updated

Author: Levent KARAGÖL

.github/workflows/windows-x86_64.yml

@@ -22,15 +22,18 @@ jobs:
 
       - name: Install vcpkg
         run: |
+          if (Test-Path "C:\vcpkg") {
+            Remove-Item "C:\vcpkg" -Recurse -Force
+          }
           git clone https://github.com/microsoft/vcpkg.git C:\vcpkg
-          .\C:\vcpkg\bootstrap-vcpkg.bat
+          & "C:\vcpkg\bootstrap-vcpkg.bat"
           echo "VCPKG_ROOT=C:\vcpkg" | Out-File -Append -Encoding ascii $env:GITHUB_ENV
 
       - name: Integrate vcpkg and install dependencies
         run: |
           $env:VCPKG_ROOT = "C:\vcpkg"
-          .\C:\vcpkg\vcpkg integrate install
-          .\C:\vcpkg\vcpkg install --triplet x64-windows your-library-list
+          & "$env:VCPKG_ROOT\vcpkg" integrate install
+          & "$env:VCPKG_ROOT\vcpkg" install --triplet x64-windows your-library-list
 
       - name: Prepare build environment
         run: |