chore: fix ci-deprecations, add test-runs for php 8.3 (#22)

* chore: fix ci-deprecations, add test-runs for php 8.3

* Update .github/workflows/php.yml

Co-authored-by: Jonathan Beliën <jbelien@users.noreply.github.com>

---------

Co-authored-by: Christopher Georg <christopher.georg@sr-travel.de>
Co-authored-by: Jonathan Beliën <jbelien@users.noreply.github.com>

Author: 3 people

.github/workflows/php.yml

@@ -12,9 +12,9 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-version: ['7.4', '8.0', '8.1', '8.2']
+        php-version: ['7.4', '8.0', '8.1', '8.2', '8.3']
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Use PHP ${{ matrix.php-version }}
       uses: shivammathur/setup-php@v2
       with:
@@ -31,11 +31,11 @@ jobs:
     runs-on: ubuntu-latest
     name: PHPStan
     steps:
-    - uses: actions/checkout@v3
-    - name: Use PHP 8.2
+    - uses: actions/checkout@v4
+    - name: Use PHP 8.3
       uses: shivammathur/setup-php@v2
       with:
-        php-version: 8.2
+        php-version: 8.3
         extensions: curl
     - name: Install dependencies
       run: composer install --no-progress