Merge pull request #6471 from magento-trigger/MC-39996

[trigger] MC-39996: Add composer2 support

Author: fascinosum

composer.json

@@ -32,8 +32,8 @@
         "colinmollenhour/cache-backend-redis": "1.11.0",
         "colinmollenhour/credis": "1.11.1",
         "colinmollenhour/php-redis-session-abstract": "~1.4.0",
-        "composer/composer": "^1.9",
-        "magento/magento-composer-installer": ">=0.1.11",
+        "composer/composer": "^1.9 || ^2.0",
+        "magento/magento-composer-installer": "^0.1.11",
         "elasticsearch/elasticsearch": "~7.7.0",
         "guzzlehttp/guzzle": "^6.3.3",
         "laminas/laminas-captcha": "^2.7.1",

composer.lock

@@ -23,7 +23,7 @@
         "ext-xsl": "*",
         "lib-libxml": "*",
         "colinmollenhour/php-redis-session-abstract": "~1.4.0",
-        "composer/composer": "^1.9",
+        "composer/composer": "^1.9 || ^2.0",
         "guzzlehttp/guzzle": "^6.3.3",
         "laminas/laminas-code": "~3.4.1",
         "laminas/laminas-crypt": "^2.6.0",