Updated github actions + ran php-cs-fixer + fixed phpstan errors until the level 4

Author: sebprt

.github/workflows/actions.yml

@@ -7,7 +7,7 @@ jobs:
             -   uses: actions/checkout@v2
             -   name: Cs-Fixer
                 run: |
-                    wget -q https://cs.symfony.com/download/php-cs-fixer-v2.phar -O php-cs-fixer
+                    wget -q https://cs.symfony.com/download/php-cs-fixer-v3.phar -O php-cs-fixer
                     chmod a+x php-cs-fixer
                     PHP_CS_FIXER_IGNORE_ENV=true ./php-cs-fixer fix src --dry-run
 
@@ -17,7 +17,7 @@ jobs:
             - uses: actions/checkout@v2
             - uses: shivammathur/setup-php@v2
               with:
-                  php-version: '8.0'
+                  php-version: '8.1'
                   tools: composer:v2
                   coverage: pcov
             - uses: actions/cache@v2
@@ -29,7 +29,7 @@ jobs:
             - uses: php-actions/composer@v5
               with:
                   args: --prefer-dist
-                  php_version: 8.0
+                  php_version: 8.1
                   php_extensions: xdebug zip
 
             - name: Run tests & generate Coverage
@@ -56,7 +56,7 @@ jobs:
             -   uses: php-actions/composer@v5
                 with:
                     args: --prefer-dist
-                    php_version: 8.0
+                    php_version: 8.1
                     php_extensions: xdebug zip
 
             -   name: PHPStan
@@ -71,7 +71,7 @@ jobs:
             -   uses: actions/checkout@v2
             -   uses: shivammathur/setup-php@v2
                 with:
-                    php-version: '8.0'
+                    php-version: '8.1'
                     tools: composer:v2
                     coverage: pcov
             -   uses: actions/cache@v2
@@ -83,7 +83,7 @@ jobs:
             -   uses: php-actions/composer@v5
                 with:
                     args: --prefer-dist
-                    php_version: 8.0
+                    php_version: 8.1
 
             -   name: Infection
                 run: |

composer.json

@@ -12,7 +12,7 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "require": {
-        "php": "^8.0",
+        "php": "^8.1",
         "ext-json": "*",
         "nikic/php-parser": "^4.10",
         "symfony/config": "^5.2",
@@ -24,7 +24,7 @@
         "symfony/yaml": "^5.2",
         "adlawson/vfs": "dev-develop",
         "phpunit/phpunit": "^9.0",
-        "php-etl/phpunit-extension": "^0.2.0",
+        "php-etl/phpunit-extension": "^0.4.0",
         "php-etl/spreadsheet-flow": "^0.1.0",
         "php-etl/bucket-contracts": "^0.1.0",
         "php-etl/pipeline-contracts": "^0.3.0"