allow installation with symfony 8

Author: dbu

.github/ISSUE_TEMPLATE.md

@@ -39,5 +39,5 @@ $ composer show --latest 'symfony-cmf/*'
     If it's an error message or piece of code, use code block tags,
     and make sure you provide the whole stack trace(s),
     not just the first error message you can see.
-    More details here: https://github.com/symfony-cmf/Testing/blob/master/CONTRIBUTING.md#issues
+    More details here: https://github.com/symfony-cmf/Testing/blob/5.x/CONTRIBUTING.md#issues
 -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,6 +1,6 @@
 | Q             | A
 | ------------- | ---
-| Branch?       | "master" for new features / the branch of the current release for fixes
+| Branch?       | branch of the next release for new features / the branch of the current release for fixes
 | Bug fix?      | yes/no
 | New feature?  | yes/no
 | BC breaks?    | yes/no

.github/workflows/test-application.yaml

@@ -11,7 +11,7 @@ on:
 jobs:
     test:
         name: 'PHP ${{ matrix.php-version }}, Symfony ${{ matrix.symfony-version }} ${{ matrix.dependencies}}'
-        runs-on: ubuntu-20.04
+        runs-on: ubuntu-latest
 
         env:
             SYMFONY_DEPRECATIONS_HELPER: weak
@@ -27,6 +27,8 @@ jobs:
               - php-version: '8.1'
               - php-version: '8.2'
               - php-version: '8.3'
+              - php-version: '8.4'
+              - php-version: '8.5'
 
         steps:
             - name: Checkout project

composer.json

@@ -11,22 +11,22 @@
     "require": {
         "php": "^8.1",
         "doctrine/data-fixtures": "^1.2",
-        "symfony/browser-kit": "^6.4 || ^7.0"
+        "symfony/browser-kit": "^6.4 || ^7.0 || ^8.0"
     },
     "require-dev": {
         "ext-dom": "*",
         "doctrine/doctrine-bundle": "^1.8 || ^2.0",
         "doctrine/phpcr-odm": "^2.0",
         "doctrine/phpcr-bundle": "^3.0",
         "jackalope/jackalope-doctrine-dbal": "^2.0",
-        "symfony/console": "^6.4 || ^7.0",
-        "symfony/dependency-injection": "^6.4 || ^7.0",
-        "symfony/doctrine-bridge": "^6.4 || ^7.0",
-        "symfony/framework-bundle": "^6.4 || ^7.0",
-        "symfony/http-kernel": "^6.4 || ^7.0",
+        "symfony/console": "^6.4 || ^7.0 || ^8.0",
+        "symfony/dependency-injection": "^6.4 || ^7.0 || ^8.0",
+        "symfony/doctrine-bridge": "^6.4 || ^7.0 || ^8.0",
+        "symfony/framework-bundle": "^6.4 || ^7.0 || ^8.0",
+        "symfony/http-kernel": "^6.4 || ^7.0 || ^8.0",
         "symfony/monolog-bundle": "^3.5",
-        "symfony/security-bundle": "^6.4 || ^7.0",
-        "symfony/twig-bundle": "^6.4 || ^7.0",
+        "symfony/security-bundle": "^6.4 || ^7.0 || ^8.0",
+        "symfony/twig-bundle": "^6.4 || ^7.0 || ^8.0",
         "symfony/phpunit-bridge": "^7.0.3"
     },
     "conflict": {