Updated CHANGELOG.md for 3.0.1 release

[israelins85]

Corrected the country detection logic for phone number parsing.

Connection with issue(s)

Connected to #37, #38, #75

• Read contributing guide
• Check the original issue to confirm it is fully satisfied
• Add solution description to help guide reviewers
• Add unit test to verify new or fixed behaviour
• If apply, add documentation to code properties and package readme

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 43.79%. Comparing base (f446c0a) to head (64f58f0).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #80   +/-   ##
=======================================
  Coverage   43.79%   43.79%           
=======================================
  Files           1        1           
  Lines         137      137           
=======================================
  Hits           60       60           
  Misses         77       77           

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[deandreamatias]

Also need change version on pubspec.yaml

[deandreamatias]

@israelins85 also need to change version on pubspec.yaml