Move toolcache cleanup to separated script

.github/workflows/workflow.yml

@@ -43,6 +43,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 runner.os
+
       - name: Clear tool cache (macOS)
         if: runner.os == 'macos'
         run: |

__tests__/clear-toolcache.ps1

@@ -0,0 +1 @@
+Write-Host $args[0]