fix CI composer scripts

Author: Gummibeer

.github/workflows/run-tests.yml

@@ -23,6 +23,7 @@ jobs:
         with:
           php-version: ${{ matrix.php }}
           extensions: dom, curl, libxml, mbstring, zip
+          tools: composer:v2
 
       - uses: actions/cache@v2
         with:

composer.json

@@ -56,6 +56,8 @@
             "@composer validate --strict --ansi --no-interaction --quiet",
             "@composer normalize --ansi --no-interaction --quiet",
             "@composer thanks --ansi --no-interaction --quiet"
-        ]
+        ],
+        "normalize": "echo 'composer global require ergebnis/composer-normalize'",
+        "thanks": "echo 'composer global require symfony/thanks'"
     }
 }