fix: backward compatible for composer 1

CHANGELOG.md

-## [1.1.0] - 2020-11-03
-## Changed
+## [1.1.0] - 2021-05-21
+## Added
 - Support for Composer 2
+- Support for PHP 8
 
 ## [1.0.1] - 2019-05-30
 ## Added

composer.json

@@ -5,7 +5,6 @@
     "keywords": ["wordpress", "code sniffer", "admin"],
     "homepage": "https://gitlab.com/wpdesk/wp-code-sniffer",
     "type": "phpcodesniffer-standard",
-    "minimum-stability": "beta",
     "prefer-stable": true,
     "authors": [
         {
@@ -14,7 +13,7 @@
         }
     ],
     "require": {
-        "dealerdirect/phpcodesniffer-composer-installer": "^0.7",
+        "dealerdirect/phpcodesniffer-composer-installer": "0.6|^0.7",
         "phpcompatibility/php-compatibility": "^9.3",
         "squizlabs/php_codesniffer": "^3.5",
         "wp-coding-standards/wpcs": "^2.2"