Remove fixed version of Carbon

Author: tonysm

.github/workflows/run-tests.yml

@@ -43,7 +43,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          composer require "laravel/framework:${{ matrix.laravel }}" "orchestra/testbench:${{ matrix.testbench }}" "orchestra/workbench:${{ matrix.workbench }}" "nesbot/carbon:^2.64.1" --no-interaction --no-update
+          composer require "laravel/framework:${{ matrix.laravel }}" "orchestra/testbench:${{ matrix.testbench }}" "orchestra/workbench:${{ matrix.workbench }}" --no-interaction --no-update
           composer update --${{ matrix.stability }} --prefer-dist --no-interaction
 
       - name: Execute tests