[!!!][TASK] Validate PHP 8.5 with TYPO3 13.4

.ddev/config.yaml

@@ -27,7 +27,7 @@ corepack_enable: false
 
 # docroot: <relative_path> # Relative path to the directory containing index.php.
 
-# php_version: "8.3"  # PHP version to use, "5.6" through "8.5"
+# php_version: "8.5"  # PHP version to use, "5.6" through "8.5"
 
 # You can explicitly specify the webimage but this
 # is not recommended, as the images are often closely tied to DDEV's' behavior,

.github/workflows/tasks.yml

@@ -9,20 +9,19 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: [ '8.2', '8.3', '8.4', '8.5' ]
-        typo3: [ '12', '13' ]
+        php: ['8.2', '8.3', '8.4', '8.5']
+        typo3: ['13']
     steps:
       - name: Setup PHP with PECL extension
         uses: shivammathur/setup-php@v2
         with:
           php-version: ${{ matrix.php }}
-      - uses: actions/checkout@v3
-      - uses: actions/cache@v3
+      - uses: actions/checkout@v6
+      - uses: actions/cache@v4
         with:
           path: ~/.composer/cache/files
           key: ${{ runner.os }}-${{ matrix.php }}-composer-${{ hashFiles('**/composer.lock') }}
           restore-keys: |
             ${{ runner.os }}-${{ matrix.php }}-composer-
-      - run: composer require typo3/minimal="^${{ matrix.typo3 }}" --dev --ignore-platform-req=php+
-      - run: composer install --no-interaction --no-progress --ignore-platform-req=php+
+      - run: composer require typo3/minimal="^${{ matrix.typo3 }}" --dev --no-interaction -W
       - run: ./vendor/bin/grumphp run --ansi

Configuration/RequestMiddlewares.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 use AUS\RootSitemap\Middleware\RootSitemapMiddleware;
 
 return [

Configuration/SiteConfiguration/Overrides/sites.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 // Experimental example to add a new field to the site configuration
 
 // Configure a new simple required input field to site

composer.json

@@ -7,11 +7,11 @@
   "type": "typo3-cms-extension",
   "require": {
     "php": "~8.2.0 || ~8.3.0 || ~8.4.0 || ~8.5.0",
-    "typo3/cms-core": "^12.4 || ^13.4",
-    "typo3/cms-seo": "^12.4 || ^13.4"
+    "typo3/cms-core": "^13.4",
+    "typo3/cms-seo": "^13.4"
   },
   "require-dev": {
-    "pluswerk/grumphp-config": "^7.2.0 || ^10.1.3",
+    "pluswerk/grumphp-config": "^10.1.3",
     "saschaegerer/phpstan-typo3": "^1.8.2 || ^2.1.1",
     "ssch/typo3-rector": "^1.1.3 || ^2.15.2 || ^3.6.2"
   },

ext_emconf.php

@@ -6,7 +6,7 @@
     'description' => '/sitemap.xml will show all language sitemaps',
     'constraints' => [
         'depends' => [
-            'typo3' => '11.0.0-13.4.99',
+            'typo3' => '13.4.0-13.4.99',
         ],
     ],
     'autoload' => [

rector.php

@@ -4,13 +4,11 @@
 
 use PLUS\GrumPHPConfig\RectorSettings;
 use Rector\Config\RectorConfig;
-use Rector\Caching\ValueObject\Storage\FileCacheStorage;
 
 return static function (RectorConfig $rectorConfig): void {
     $rectorConfig->parallel();
     $rectorConfig->importNames();
     $rectorConfig->importShortClasses();
-    $rectorConfig->cacheClass(FileCacheStorage::class);
     $rectorConfig->cacheDirectory('./var/cache/rector');
 
     $rectorConfig->paths(