Add PHP 8.5 and update PHPStan (#246)

* Remove composer.lock

We do not need this for a library project.

* Add PHP 8.4 and 8.5 to the CI matrix

Author: akrabat

.github/workflows/tests.yml

@@ -10,10 +10,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: [8.0, 8.1, 8.2, 8.3]
+        php: [8.0, 8.1, 8.2, 8.3, 8.4, 8.5]
         experimental: [false]
         include:
-          - php: 8.2
+          - php: 8.4
             analysis: true
 
     steps:
@@ -26,12 +26,7 @@ jobs:
           php-version: ${{ matrix.php }}
           coverage: xdebug
 
-      - name: Install dependencies with Composer (PHP 8.0)
-        if: ${{ matrix.php == 8.0 }}
-        run: rm composer.lock && composer update
-
-      - name: Install dependencies with Composer (PHP 8.1+)
-        if: ${{ matrix.php >= 8.1 }}
+      - name: Install dependencies with Composer
         uses: ramsey/composer-install@v2
 
       - name: Coding standards

.gitignore

@@ -1,4 +1,5 @@
 .idea/
+composer.lock
 .vendor/
 vendor/
 /.tmp