uses max length of 30 instead of 15

I have fixed this also for the admin invite.

Closes issue #6373

resources/assets/components/invite/AdminInvite.vue

@@ -38,7 +38,7 @@
                                 class="form-control form-control-lg"
                                 placeholder="What should everyone call you?"
                                 minlength="2"
-                                maxlength="15"
+u                                maxlength="30"
                                 v-model="form.username" />
 
                             <p v-if="errors.username" class="form-text text-danger">

resources/views/auth/email/forgot.blade.php

@@ -55,7 +55,7 @@
                                         type="text"
                                         class="form-control form-control-lg bg-glass text-white"
                                         name="username"
-                                        maxlength="15"
+                                        maxlength="30"
                                         placeholder="{{ __('Your username') }}" required>
                                      @if ($errors->has('username') )
                                         <span class="text-danger small mb-3">