fix: Fixed issue where Bicep build output would cause Foreach-Paralle…

…l to fail (#709)

## Description

Fixed issue where Bicep build output would cause Foreach-Parallel to
fail. This unblocks
- `operational-insights/workspace`
- `compute/virtual-machine`

Ref: Azure/bicep#12653

| Pipeline |
| - |
|
[![avm.res.operational-insights.workspace](https://github.com/AlexanderSehr/bicep-registry-modules/actions/workflows/avm.res.operational-insights.workspace.yml/badge.svg?branch=users%2Falsehr%2FthreadingTest_2)](https://github.com/AlexanderSehr/bicep-registry-modules/actions/workflows/avm.res.operational-insights.workspace.yml)
|

---------

Co-authored-by: Erika Gressi <[email protected]>

avm/utilities/pipelines/sharedScripts/Set-ModuleReadMe.ps1

@@ -1156,7 +1156,7 @@ function Set-UsageExamplesSection {
     $buildTestFileMap = [System.Collections.Concurrent.ConcurrentDictionary[string, object]]::new()
     $testFilePaths | ForEach-Object -Parallel {
         $folderName = Split-Path (Split-Path -Path $_) -Leaf
-        $buildTemplate = bicep build $_ --stdout | ConvertFrom-Json -AsHashtable
+        $buildTemplate = (bicep build $_ --stdout 2>$null) | ConvertFrom-Json -AsHashtable
 
         $dict = $using:buildTestFileMap
         $null = $dict.TryAdd($folderName, $buildTemplate)

avm/utilities/pipelines/staticValidation/compliance/module.tests.ps1

@@ -45,7 +45,7 @@ foreach ($moduleFolderPath in $moduleFolderPaths) {
 $builtTestFileMap = [System.Collections.Concurrent.ConcurrentDictionary[string, object]]::new()
 $pathsToBuild | ForEach-Object -Parallel {
   $dict = $using:builtTestFileMap
-  $builtTemplate = bicep build $_ --stdout | ConvertFrom-Json -AsHashtable
+  $builtTemplate = (bicep build $_ --stdout 2>$null) | ConvertFrom-Json -AsHashtable
   $null = $dict.TryAdd($_, $builtTemplate)
 }