👷 improve CI

Author: garak

.github/workflows/build.yaml

@@ -12,7 +12,7 @@ jobs:
         name: PHPStan
         steps:
             - name: Checkout
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
             - name: PHPStan
               uses: docker://oskarstark/phpstan-ga
               env:
@@ -24,7 +24,7 @@ jobs:
         name: PHP-CS-Fixer
         steps:
             - name: Checkout
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
             - name: Fix CS
               uses: docker://oskarstark/php-cs-fixer-ga
               with:
@@ -35,44 +35,35 @@ jobs:
             fail-fast: false
             matrix:
                 include:
-                    - description: 'Symfony 6.4'
+                    - description: 'Lowest'
                       php: '8.2'
-                      symfony: '6.4.*'
-                      composer_option: '--prefer-lowest'
-                    - description: 'Symfony 7.3'
-                      php: '8.3'
-                      symfony: '7.3.*'
+                      symfony: 6.4.*
+                      dependencies: lowest
                     - description: 'Symfony 7.4'
                       php: '8.4'
-                      symfony: '7.4.*@dev'
+                      symfony: 7.4.*
                     - description: 'Symfony 8.0'
                       php: '8.5'
-                      symfony: '8.0.*@dev'
+                      symfony: 8.0.*
         name: PHP ${{ matrix.php }} tests (${{ matrix.description }})
         steps:
             - name: Checkout
-              uses: actions/checkout@v4
-            - name: Cache
-              uses: actions/cache@v4
-              with:
-                  path: ~/.composer/cache/files
-                  key: ${{ matrix.php }}-${{ matrix.symfony }}-${{ matrix.composer_option }} 
+              uses: actions/checkout@v6
             - name: Setup PHP
               uses: shivammathur/setup-php@v2
               with:
                   php-version: ${{ matrix.php }}
-            - name: require specific Symfony version
-              if: matrix.symfony
-              run: |
-                  sed -ri 's/"symfony\/(.+)": "(.+)"/"symfony\/\1": "'${{ matrix.symfony }}'"/' composer.json;
-            - name: use possible dev deps
+                  tools: flex
+            - name: Allow dev dependencies
+              run: composer config minimum-stability dev && composer config prefer-stable true
               if: contains(matrix.symfony, '@dev')
-              run: |
-                  composer config minimum-stability dev
-                  composer config prefer-stable true
-            - name: update vendors
-              run: composer update --no-interaction --no-progress --ansi ${{ matrix.composer_option }}
-            - name: run tests
+            - name: Install dependencies
+              uses: ramsey/composer-install@v3
+              with:
+                  dependency-versions: ${{ matrix.dependencies }}
+              env:
+                  SYMFONY_REQUIRE: ${{ matrix.symfony }}
+            - name: Run tests
               run: bin/phpunit --colors=always --coverage-clover=clover.xml
             - name: save test coverage
               if: ${{ matrix.php == '8.4' }}