Merge pull request #268 from symfony-cmf/psr-log-2-3

allow installation with psr/log 2 and 3

Author: dbu

composer.json

@@ -18,7 +18,7 @@
         "php": "^7.2 || ^8.0",
         "symfony/routing": "^4.4 || ^5.0",
         "symfony/http-kernel": "^4.4 || ^5.0",
-        "psr/log": "^1.0"
+        "psr/log": "^1.0 || ^2.0 || ^3.0"
     },
     "require-dev": {
         "symfony/phpunit-bridge": "^5.0",