update ci for symfony 8

Author: Cristoforo Cervino

.github/workflows/ci.yml

@@ -18,6 +18,12 @@ jobs:
           # Doctrine ORM 3.0 requires PHP 8.4+
           - php-version: '8.2'
             doctrine-orm-version: '3.0.*'
+          # Symfony 8.0 requires PHP 8.4+
+          - php-version: '8.2'
+            symfony-version: '8.0.*'
+          # Symfony 8 only works with doctrine-bundle 3.1+, which conflicts with ORM 2.x
+          - symfony-version: '8.0.*'
+            doctrine-orm-version: '2.20.*'
 
     name: PHP ${{ matrix.php-version }} · SF ${{ matrix.symfony-version }} · Doctrine ORM ${{ matrix.doctrine-orm-version }}
 
@@ -42,6 +48,10 @@ jobs:
       - name: Constrain Doctrine ORM version
         run: |
           sed -ri 's/"doctrine\/orm": "[^"]+"/"doctrine\/orm": "${{ matrix.doctrine-orm-version }}"/' composer.json
+          # Symfony 8 requires doctrine-bundle 3.1+, which requires doctrine/persistence ^4; ORM 3.0.x requires ^3. Use ORM 3.1.* for SF 8.
+          if [ "${{ matrix.symfony-version }}" = "8.0.*" ] && [ "${{ matrix.doctrine-orm-version }}" = "3.0.*" ]; then
+            sed -ri 's/"doctrine\/orm": "[^"]+"/"doctrine\/orm": "3.1.*"/' composer.json
+          fi
 
       - name: Install Composer dependencies
         uses: ramsey/composer-install@v3