framework: Carbon conflict versions

• Laravel Version: 5.6.25
• PHP Version: 7.2.7
• Database Driver & Version: mysql 5.7

Description:

I need some carbon methods, but this methos aren’t available. I tried update carbon, but…

  Problem 1
    - laravel/framework v5.6.25 requires nesbot/carbon 1.25.* -> satisfiable by nesbot/carbon[1.25.0] but these conflict with your requirements or minimum-stability.
    - laravel/framework v5.6.25 requires nesbot/carbon 1.25.* -> satisfiable by nesbot/carbon[1.25.0] but these conflict with your requirements or minimum-stability.
    - laravel/framework v5.6.25 requires nesbot/carbon 1.25.* -> satisfiable by nesbot/carbon[1.25.0] but these conflict with your requirements or minimum-stability.
    - Installation request for laravel/framework (locked at v5.6.25, required as 5.6.*) -> satisfiable by laravel/framework[v5.6.25].

Steps To Reproduce:

Put in some view $model->created_at->localeMonth

var_dump($dt->localeMonth);                                  // string(7) "Oktober"
var_dump($dt->shortLocaleMonth);                             // string(3) "Okt"

And I received this error

"Unknown getter 'localeMonth' (View: /home/igor/projetos/portalcea/resources/views/front/index.blade.php)"

This method above are available on Carbon docs