Run configuration checks with explicit PowerShell shells

.github/workflows/configuration-results.yml

@@ -9,14 +9,17 @@ permissions:
 jobs:
   configuration-results:
     runs-on: windows-latest
-    strategy:
-      matrix:
-        shell: [powershell, pwsh]
     steps:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-      - name: Mocked regression tests (no Windows configuration changes)
-        shell: ${{ matrix.shell }}
+      - name: Mocked regressions in Windows PowerShell 5.1
+        shell: powershell
         run: ./tests/Test-ConfigurationResults.ps1
-      - name: Real Windows read-only smoke tests
-        shell: ${{ matrix.shell }}
+      - name: Read-only Windows smoke in Windows PowerShell 5.1
+        shell: powershell
+        run: ./tests/Test-ConfigurationReadOnlyWindows.ps1
+      - name: Mocked regressions in PowerShell 7
+        shell: pwsh
+        run: ./tests/Test-ConfigurationResults.ps1
+      - name: Read-only Windows smoke in PowerShell 7
+        shell: pwsh
         run: ./tests/Test-ConfigurationReadOnlyWindows.ps1