Merge 2.7 into 3.0

Author: soyuka

CHANGELOG.md

@@ -155,6 +155,12 @@ Breaking changes:
 * Metadata: `Patch` is added to the automatic CRUD
 * Symfony: generated route names and operation names changed, route naming can be changed directly within metadata
 
+## v2.7.7
+
+### Bug fixes
+
+* [53cb25fab](https://github.com/api-platform/core/commit/53cb25fab0fcec2d336590c7e82e1c6a8728d00a) fix(symfony): annotation reader argument optional (#5358)
+
 ## v2.7.6
 
 ### Bug fixes