Merge branch '3.4'

* 3.4:
  Skip tests affected by PHP bug 75354
  fix deps
  fix PHP 7.2 compatibility
  [Form] Fix error message in circular reference dependencies check

Author: nicolas-grekas

composer.json

@@ -31,6 +31,7 @@
         "phpdocumentor/reflection-docblock": "^3.0|^4.0"
     },
     "conflict": {
+        "phpdocumentor/type-resolver": "<0.2.1",
         "symfony/dependency-injection": "<3.4",
         "symfony/property-access": "<3.4",
         "symfony/property-info": "<3.4",