Update Powershell on runners for pester

Author: virot

.github/workflows/main.yaml

@@ -78,6 +78,11 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
+    - name: Install PowerShell 7.6
+      run: |
+        winget install --id Microsoft.PowerShell --source winget --accept-package-agreements --accept-source-agreements
+
+
     - name: Download Build Output
       uses: actions/download-artifact@v4
       with:
@@ -101,6 +106,11 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
+    - name: Install PowerShell 7.6
+      run: |
+        brew update
+        brew install --cask powershell
+
     - name: Download Build Output
       uses: actions/download-artifact@v4
       with: