Fix broken syntax

Author: sstok

.github/workflows/inspector-bot.yml

@@ -33,7 +33,7 @@ jobs:
                 name: 'Set up PHP'
                 uses: 'shivammathur/setup-php@v2'
                 with:
-                    php-version: '{{ inputs.php_version }}'
+                    php-version: {{ inputs.php_version }}
                     coverage: none
                 env:
                     update: true