extracted script name to variable

.github/workflows/test.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches: [ main ]
 
+env:
+  TEST_SCRIPT: 'test1.ps1'
+
 jobs:
   build:
     runs-on: windows-latest
@@ -20,7 +23,7 @@ jobs:
     #   run: Test-Path $Env:GITHUB_WORKSPACE/test.ps1 | Should -Be $true
     - name: Create msi from PowerShell Script
       shell: pwsh
-      run: .\test1.ps1
+      run: ${{env.TEST_SCRIPT}}
     - name: Upload artifacts
       uses: actions/upload-artifact@v2
       with: