chore(deps): Laravel 10 support

Adds support for the upcoming release of Laravel 10.

.github/workflows/main.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Install Composer dependencies
         run: |
             composer require "laravel/framework:${{ matrix.laravel }}" "orchestra/testbench:${{ matrix.testbench }}" --no-interaction --no-update
-            composer update --${{ matrix.stability }} --prefer-dist --no-interaction
+            composer update --prefer-dist --no-interaction
 
       - name: Test php code
         run: composer test:unit