Merge branch '5.4' into 6.2

* 5.4:
  Enable new DOCtor rule `no_duplicate_use_statements`

Author: OskarStark

.doctor-rst.yaml

@@ -34,6 +34,7 @@ rules:
     no_brackets_in_method_directive: ~
     no_composer_req: ~
     no_directive_after_shorthand: ~
+    no_duplicate_use_statements: ~
     no_explicit_use_of_code_block_php: ~
     no_inheritdoc: ~
     no_merge_conflict: ~