Merge branch '5.3' into 5.4

* 5.3:
  Fix tests
  [VarExporter] escape unicode chars involved in directionality
  [Intl] Update the ICU data to 70.1
  Fix typos
  Update validators.ca.xlf
  Add missing Validator translations for Estonian
  Fix `Request::getUserInfo()` return type
  [VarDumper] Make dumping DateInterval instances timezone-independent
  Add missing validators translation in Brazillian Portuguese
  I heard you like some Finnish translations #43432
  fix typo and improve TH translation
  Added missing translations for Thai (th)
  [Messenger] Use `TransportMessageIdStamp` in `InMemoryTransport` allows retrying

Resources/data/parents.json

@@ -12,7 +12,6 @@
     "en_BS": "en_001",
     "en_BW": "en_001",
     "en_BZ": "en_001",
-    "en_CA": "en_001",
     "en_CC": "en_001",
     "en_CH": "en_150",
     "en_CK": "en_001",
@@ -65,7 +64,6 @@
     "en_NU": "en_001",
     "en_NZ": "en_001",
     "en_PG": "en_001",
-    "en_PH": "en_001",
     "en_PK": "en_001",
     "en_PN": "en_001",
     "en_PW": "en_001",