ci: update some actions version

.github/workflows/ci.yaml

@@ -2,40 +2,40 @@ name: CI
 
 on:
     push:
-        branches: [ main ]
+        branches: [main]
     pull_request:
     schedule:
-        -   cron: '0 0 * * MON'
+        - cron: "0 0 * * MON"
 
 jobs:
     check-cs:
         name: Check Coding Standards
         runs-on: ubuntu-latest
         steps:
             - name: Checkout
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
 
             - name: PHP-CS-Fixer
               uses: docker://oskarstark/php-cs-fixer-ga
               with:
-                args: --config=.php-cs-fixer.php --diff --dry-run
+                  args: --config=.php-cs-fixer.php --diff --dry-run
 
     ci:
         name: Test PHP ${{ matrix.php-version }} ${{ matrix.name }}
         runs-on: ubuntu-latest
         strategy:
             fail-fast: false
             matrix:
-                php-version: ['8.2', '8.3']
-                composer-flags: ['']
-                name: ['']
+                php-version: ["8.2", "8.3"]
+                composer-flags: [""]
+                name: [""]
                 include:
                     - php-version: 8.1
-                      composer-flags: '--prefer-lowest'
-                      name: '(prefer lowest dependencies)'
+                      composer-flags: "--prefer-lowest"
+                      name: "(prefer lowest dependencies)"
         steps:
             - name: Checkout
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
 
             - name: Setup PHP, with composer and extensions
               uses: shivammathur/setup-php@v2

src/Exception/Exception.php

@@ -11,4 +11,6 @@
 
 namespace Joli\JoliNotif\Exception;
 
-interface Exception {}
+interface Exception
+{
+}

src/Exception/InvalidNotificationException.php

@@ -21,7 +21,7 @@ public function __construct(
         Notification $notification,
         $message = '',
         $code = 0,
-        Exception $previous = null
+        ?Exception $previous = null
     ) {
         $this->notification = $notification;
 

src/Exception/NoSupportedNotifierException.php

@@ -16,7 +16,7 @@ class NoSupportedNotifierException extends \RuntimeException implements Exceptio
     public function __construct(
         $message = 'No supported notifier',
         $code = 0,
-        Exception $previous = null
+        ?Exception $previous = null
     ) {
         parent::__construct($message, $code, $previous);
     }

src/Util/OsHelper.php

@@ -16,4 +16,6 @@
 /**
  * @deprecated since 2.6, use OsHelper from jolicode/php-os-helper instead
  */
-class OsHelper extends BaseOsHelper {}
+class OsHelper extends BaseOsHelper
+{
+}