Merge branch '5.3' into 5.4

* 5.3:
  Fix typo

Author: nicolas-grekas

composer.json

@@ -18,8 +18,7 @@
         "php-http/async-client-implementation": "*",
         "php-http/client-implementation": "*",
         "psr/http-client-implementation": "1.0",
-        "symfony/http-client-implementation": "2.4",
-        "symfony/polyfill-php80": "^1.16"
+        "symfony/http-client-implementation": "2.4"
     },
     "require": {
         "php": ">=7.2.5",