Update tests.yml to latest Symfony and PHP

PHP 8.4 just came out.  Symfony 7.1 is current, but next week it will be 7.2.

.github/workflows/tests.yml

@@ -15,12 +15,14 @@ jobs:
         include:
           - php-version: '8.1'
             symfony-version: '6.4.*'
-          - php-version: '8.3'
+          - php-version: '8.4'
             symfony-version: '6.4.*'
           - php-version: '8.2'
-            symfony-version: '7.0.*'
+            symfony-version: '7.1.*'
           - php-version: '8.3'
-            symfony-version: '7.0.*'
+            symfony-version: '7.1.*'
+          - php-version: '8.4'
+            symfony-version: '7.1.*'
     steps:
       - name: "Checkout"
         uses: actions/checkout@v2
@@ -42,7 +44,7 @@ jobs:
         uses: ./.github/actions/install
         with:
           php-version: '8.3'
-          symfony-version: '7.0.*'
+          symfony-version: '7.1.*'
       - name: "Run checkstyle with symplify/easy-coding-standard"
         run: vendor/bin/ecs
 
@@ -56,8 +58,8 @@ jobs:
       - name: "Setup env & install dependencies"
         uses: ./.github/actions/install
         with:
-          php-version: '8.3'
-          symfony-version: '7.0.*'
+          php-version: '8.4'
+          symfony-version: '7.1.*'
           coverage-mode: 'xdebug'
       - name: "Run tests with phpunit/phpunit"
         env: