Add warning message if user using PowerShell 6 or PowerShell 7 < 7.0.6 (#15012)

Author: erich-wang

tools/UpdateModules.psm1

@@ -105,6 +105,23 @@ function New-ModulePsm1 {
             {
                 $template = $template -replace "%AZURECOREPREREQUISITE%", ""
             }
+            elseif($file.BaseName -ieq 'Az.Accounts')
+            {
+                $template = $template -replace "%AZURECOREPREREQUISITE%", 
+@"
+if (%ISAZMODULE% -and (`$PSEdition -eq 'Core'))
+{
+    if (`$PSVersionTable.PSVersion -lt [Version]'6.2.4')
+    {
+        throw "Current Az version doesn't support PowerShell Core versions lower than 6.2.4. Please upgrade to PowerShell Core 6.2.4 or higher."
+    }
+    if (`$PSVersionTable.PSVersion -lt [Version]'7.0.6')
+    {
+        Write-Warning "This version of Az.Accounts is only supported on Windows PowerShell 5.1 and PowerShell 7.0.6 or greater, open https://aka.ms/install-powershell to learn how to upgrade. For further information, go to http://aka.ms/azpslifecyle."
+    }
+}
+"@
+            }
             else
             {
                 $template = $template -replace "%AZURECOREPREREQUISITE%",