Use --no-ansi CLI option

Author: sebastianbergmann

.github/workflows/ci.yml

@@ -31,13 +31,13 @@ jobs:
           tools: none
 
       - name: Ensure that composer.json is valid
-        run: ./tools/composer validate --strict composer.json
+        run: ./tools/composer validate --no-ansi --strict composer.json
 
       - name: Ensure that dependencies can be installed
-        run: ./tools/composer install
+        run: ./tools/composer --no-ansi install
 
       - name: Ensure that dependencies are up-to-date
-        run: ./tools/composer show --minor-only --latest --direct --outdated --strict
+        run: ./tools/composer show --no-ansi --minor-only --latest --direct --outdated --strict
 
   coding-guidelines:
     name: Coding Guidelines