ci: Update workflow to use self-hosted Ubuntu runner

Author: J-MaFf

.github/workflows/pester-tests.yml

@@ -24,17 +24,17 @@ on:
 jobs:
   test:
     name: Run Pester Tests
-    runs-on: windows-latest
-    strategy:
-      matrix:
-        pwsh-version: ["7.2", "7.3", "7.4"]
+    runs-on: [self-hosted, linux]
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4
 
-      - name: Setup PowerShell ${{ matrix.pwsh-version }}
+      - name: Install PowerShell Core
         run: |
-          choco install powershell-core --version=${{ matrix.pwsh-version }} -y
+          if ! command -v pwsh &> /dev/null; then
+            sudo apt-get update
+            sudo apt-get install -y powershell
+          fi
 
       - name: Verify PowerShell Version
         shell: pwsh
@@ -82,16 +82,16 @@ jobs:
         if: always()
         uses: actions/upload-artifact@v4
         with:
-          name: pester-test-results-${{ matrix.pwsh-version }}
+          name: pester-test-results
           path: test-results.xml
           retention-days: 30
 
       - name: Publish Test Report
         if: always()
-        uses: EnricoMi/publish-unit-test-result-action/windows@v2
+        uses: EnricoMi/publish-unit-test-result-action/linux@v2
         with:
           files: test-results.xml
-          check_name: Test Results (PowerShell ${{ matrix.pwsh-version }})
+          check_name: Test Results (PowerShell)
           comment_mode: always
 
   test-summary: