Merge branch '5.3' into 5.4

* 5.3:
  [Process] intersect with getenv() in case-insensitive manner to get default envs
  [Serializer] fix support for lazy/unset properties
  Fix redundant type casts
  [Notifier] Fix AllMySms bridge body content
  Revert "[DoctrineBridge] add support for the JSON type"

Author: nicolas-grekas

Tests/NumberFormatter/AbstractNumberFormatterTest.php

@@ -666,12 +666,12 @@ public function parseProvider()
         return [
             ['prefix1', false, '->parse() does not parse a number with a string prefix.', 0],
             ['prefix1', false, '->parse() does not parse a number with a string prefix.', 0, false],
-            ['1.4suffix', (float) 1.4, '->parse() parses a number with a string suffix.', 3],
-            ['1.4suffix', (float) 1.4, '->parse() parses a number with a string suffix.', 3, false],
+            ['1.4suffix', 1.4, '->parse() parses a number with a string suffix.', 3],
+            ['1.4suffix', 1.4, '->parse() parses a number with a string suffix.', 3, false],
             ['1,234.4suffix', 1234.4, '->parse() parses a number with a string suffix.', 7],
             ['1,234.4suffix', 1.0, '->parse() parses a number with a string suffix.', 1, false],
-            ['-.4suffix', (float) -0.4, '->parse() parses a negative dot float with suffix.', 3],
-            ['-.4suffix', (float) -0.4, '->parse() parses a negative dot float with suffix.', 3, false],
+            ['-.4suffix', -0.4, '->parse() parses a negative dot float with suffix.', 3],
+            ['-.4suffix', -0.4, '->parse() parses a negative dot float with suffix.', 3, false],
             [',4', false, '->parse() does not parse when invalid grouping used.', 0],
             [',4', false, '->parse() does not parse when invalid grouping used.', 0, false],
             ['123,4', false, '->parse() does not parse when invalid grouping used.', 0],