Merge branch '6.2' into 6.3

* 6.2:
  Fix some Composer keywords
  [FrameworkBundle] Rename limiter’s `strategy` to `policy` in XSD
  [VarDumper] Fixed dumping of CutStub
  Fix test
  Change limit argument from string to integer.
  [Messenger] Fix `evaluate()` calls in `WorkerTest`
  [Mailer] STDOUT blocks infinitely under Windows when STDERR is filled

Author: fabpot

composer.json

@@ -2,6 +2,7 @@
     "name": "symfony/http-client",
     "type": "library",
     "description": "Provides powerful methods to fetch HTTP resources synchronously or asynchronously",
+    "keywords": ["http"],
     "homepage": "https://symfony.com",
     "license": "MIT",
     "authors": [