Remove matrix from release action

.github/workflows/release.yaml

@@ -8,14 +8,11 @@ jobs:
   test:
     name: PHP ${{ matrix.php }}
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        php: [ '8.0', '8.1', '8.2' ]
     steps:
       - uses: actions/checkout@v3
       - uses: shivammathur/setup-php@v2
         with:
-          php-version: ${{ matrix.php }}
+          php-version: 8.2
       - uses: ramsey/composer-install@v2
       - name: Run tests
         run: vendor/bin/phpunit