add POS module to generate_strings_file_for_glotpress lane

When generating strings for Glotpress from the iOS strings, the path to the POS module is missing

Author: iamgabrielma

fastlane/Fastfile

@@ -1223,6 +1223,7 @@ platform :ios do
       paths: [
         'WooCommerce/',
         'Modules/Sources/WordPress*/',
+        'Modules/Sources/PointOfSale/',
         'Modules/Sources/WPMediaPicker/',
         'Storage/Storage/',
         'Networking/Networking/',