🩹 [Patch]: Update JSON conversion logic in ConvertTo-GitHubOutput.ps1…

… to handle string normalization and non-string values

src/functions/private/Commands/ConvertTo-GitHubOutput.ps1

@@ -71,12 +71,18 @@
             Write-Debug 'Property value:'
             Write-Debug ($InputObject | Out-String)
 
-            # Convert hashtable or PSCustomObject to compressed JSON
-            if (-not ($value -is [string])) {
-                # This condition now catches objects, hashtables, and arrays.
+            # For each property value:
+            if ($value -is [string]) {
+                if (Test-Json $value -ErrorAction SilentlyContinue) {
+                    # Normalize valid JSON strings to a consistent format.
+                    $value = ($value | ConvertFrom-Json) | ConvertTo-Json -Compress -Depth 100
+                }
+            } else {
+                # For non-string values, convert to JSON.
                 $value = $value | ConvertTo-Json -Compress -Depth 100
             }
 
+
             $guid = [Guid]::NewGuid().ToString()
             $EOFMarker = "EOF_$guid"
             $outputLines += "$key<<$EOFMarker"