minor #1174 Removed friendsofphp/php-cs-fixer from dev dependencies (javiereguiluz)

This PR was squashed before being merged into the main branch.

Discussion
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Removed friendsofphp/php-cs-fixer from dev dependencies

We can remove this because we're now using PHP-CS-Fixer via a Docker image created by @OskarStark and run via GitHub Actions (see #1171)

Commits
-------

d36d83b Removed friendsofphp/php-cs-fixer from dev dependencies

Author: javiereguiluz

.github/workflows/ci.yaml

@@ -11,12 +11,17 @@ env:
     PHPUNIT_FLAGS: "-v"
     SYMFONY_PHPUNIT_DIR: "$HOME/symfony-bridge/.phpunit"
     SYMFONY_REQUIRE: ">=4.4"
+    # 40x: Since symfony/monolog-bridge 5.2:
+    # Passing an actionLevel (int|string) as constructor's 3rd argument of
+    # "Symfony\Bridge\Monolog\Handler\FingersCrossed\HttpCodeActivationStrategy"
+    # is deprecated, "Monolog\Handler\FingersCrossed\ActivationStrategyInterface" expected.
+    SYMFONY_DEPRECATIONS_HELPER: 40
 
 jobs:
     test:
         name: "${{ matrix.operating-system }} / PHP ${{ matrix.php-version }}"
         runs-on: ${{ matrix.operating-system }}
-        continue-on-error: ${{ matrix.allow-failures }}
+        continue-on-error: false
 
         strategy:
             matrix:
@@ -56,11 +61,18 @@ jobs:
               run: composer update
 
             - if: matrix.php-version == '8.0'
-              run: composer update --ignore-platform-reqs=php
+              run: composer update --ignore-platform-req=php
 
-            - name: "Install PHPUnit"
+            - if: matrix.php-version != '8.0' 
+              name: "Install PHPUnit"
               run: vendor/bin/simple-phpunit install
 
+            - if: matrix.php-version == '8.0'
+              name: "Install PHPUnit for PHP 8"
+              run: |
+                echo 'SYMFONY_PHPUNIT_VERSION=9.4' >> $GITHUB_ENV
+                vendor/bin/simple-phpunit install
+
             - name: "PHPUnit version"
               run: vendor/bin/simple-phpunit --version
 

.gitignore

@@ -16,11 +16,6 @@
 .phpunit.result.cache
 /phpunit.xml
 ###< symfony/phpunit-bridge ###
-###> friendsofphp/php-cs-fixer ###
-/.php_cs
-/.php_cs.cache
-###< friendsofphp/php-cs-fixer ###
-
 ###> symfony/webpack-encore-bundle ###
 /node_modules/
 /public/build/

composer.json

@@ -44,7 +44,6 @@
     "require-dev": {
         "dama/doctrine-test-bundle": "^6.2",
         "doctrine/doctrine-fixtures-bundle": "^3.0",
-        "friendsofphp/php-cs-fixer": "3.0.x-dev",
         "symfony/browser-kit": "^5.2",
         "symfony/css-selector": "^5.2",
         "symfony/debug-bundle": "^5.2",