fix for google drive upload script

build/gdrive_upload_full.ps1

@@ -53,8 +53,13 @@ if ($fullZip) {
             Write-Output "[ACTION] Deleting old production builds, keeping only the newly uploaded file..."
             $uploadedFileName = $fullZip.Name
 
-            # Get list of files in the target folder
-            $existingFiles = (rclone ls "$prodUploadFolder" --files-only) | ForEach-Object { $_.Trim() }
+            # Get list of files in the target folder using rclone lsf and filter out directories
+            # rclone lsf lists files and directories, with directories having a '/' suffix
+            $existingFiles = (rclone lsf "$prodUploadFolder") | ForEach-Object {
+                $_.Trim()
+            } | Where-Object {
+                -not $_.EndsWith('/')
+            }
 
             if ($LASTEXITCODE -eq 0) {
                 foreach ($fileName in $existingFiles) {