Use PHP 8

Author: ondrejmirtes

.github/workflows/update.yml

@@ -24,8 +24,7 @@ jobs:
         uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
-          php-version: "7.4"
-          tools: composer:v2
+          php-version: "8.0"
       - name: "Install dependencies"
         run: "composer install"
         working-directory: ./extractor