Updated `esc_pos_utils` package version to `0.3.1` (Open Cash Drawer).

CHANGELOG.md

+## [3.1.1]
+* Updated `esc_pos_utils` package version to `0.3.1` (Open Cash Drawer). 
+
+
 ## [3.1.0]
 * Updated `esc_pos_utils` package version to `0.3.0` (Image and Barcode alignment). 
 

example/discover_printers/pubspec.yaml

@@ -15,7 +15,7 @@ dependencies:
   image: ^2.1.4
   esc_pos_printer:
     path: ../../
-  esc_pos_utils: ^0.3.0
+  esc_pos_utils: ^0.3.1
 
 dev_dependencies:
   flutter_test:

pubspec.yaml

 name: esc_pos_printer
 description: The library allows to print receipts using an ESC/POS thermal WiFi printer.
-version: 3.1.0
+version: 3.1.1
 homepage: https://github.com/andrey-ushakov/esc_pos_printer
 
 environment:
@@ -9,7 +9,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  esc_pos_utils: ^0.3.0
+  esc_pos_utils: ^0.3.1
   # esc_pos_utils:
   #   path: ../esc_pos_utils