Adapt workflow

Author: jordisala1991

.github/workflows/test-application.yaml

@@ -22,6 +22,8 @@ jobs:
                       dependencies: 'lowest'
                     - php-version: '7.4'
                     - php-version: '8.0'
+                    - php-version: '8.0'
+                      dev-dependencies: true
 
         steps:
             - name: Checkout project
@@ -33,6 +35,10 @@ jobs:
                   php-version: ${{ matrix.php-version }}
                   tools: 'composer:v2'
 
+            - name: Allow unstable dependencies
+              if: matrix.dev-dependencies == true
+              run: composer config minimum-stability dev
+
             - name: Install dependencies with Composer
               uses: ramsey/composer-install@v1
               with: