pubspec version upgrade

Author: Dominique FIUME

pubspec.yaml

@@ -1,6 +1,6 @@
 name: country_code_picker
 description: A flutter package for showing a country code selector. In addition it gives the possibility to select a list of favorites countries, as well as to search using a simple searchbox
-version: 3.4.0
+version: 3.4.1
 homepage: https://github.com/chandrabezzo/CountryCodePicker
 repository: https://github.com/chandrabezzo/CountryCodePicker
 issue_tracker: https://github.com/imtoori/CountryCodePicker/issues