Merge branch '3.4' into 4.2

* 3.4:
  Fix typo
  fix required DependencyInjection component version

Author: nicolas-grekas

composer.json

@@ -21,7 +21,7 @@
         "symfony/cache": "~4.2",
         "symfony/config": "~4.2",
         "symfony/contracts": "^1.0.2",
-        "symfony/dependency-injection": "^4.2",
+        "symfony/dependency-injection": "^4.2.5",
         "symfony/event-dispatcher": "^4.1",
         "symfony/http-foundation": "^4.1.2",
         "symfony/http-kernel": "^4.2",