Update the reference to intl-tel-input to 12.1.1

[NeonMando158]

Update the reference to intl-tel-input to 12.1.1

[cdatehortuab]

Hello, This project looks like is not currently mantained. I've made a fork of this project. Check it at https://emberobserver.com/addons/ember-intl-tel-input2

[harishankar-gopalan]

@cdatehortuab https://emberobserver.com/addons/ember-intl-tel-input2 The above addon is almost compatible with the latest ember version except the part where the selectedCountryData, numberType, number etc are computed properties without being set using the set(). set() for these properties are given with no-op. Due to this, the binding is not possible for these computed properties. Below is the ember-twiddle, wherein if I switch the ember.js version to 2.17.x it works fine, whereas 3.16.x breaks it. https://ember-twiddle.com/63f6e6713aba1eb6c84134a4043aab6e

Any ideas on how to fix the same ?