Merge branch '2.3' into 2.7

* 2.3:
  [Form] fix #15544 when a collection type attribute "required" is false, "prototype" should too
  updated validators.bg.xlf
  [Security] Enable bcrypt validation and result length tests on all PHP versions
  [Security] Verify if a password encoded with bcrypt is no longer than 72 characters
  [Console] Avoid extra blank lines when rendering exceptions
  [Yaml] do not remove "comments" in scalar blocks

1 files changed, 1 insertions, 1 deletions

diff --git a/Core/Encoder/BasePasswordEncoder.php b/Core/Encoder/BasePasswordEncoder.php
index 1c9ada1..fcf2e47 100644
--- a/Core/Encoder/BasePasswordEncoder.php
+++ b/Core/Encoder/BasePasswordEncoder.php
@@ -95,6 +95,6 @@ abstract class BasePasswordEncoder implements PasswordEncoderInterface
      */
     protected function isPasswordTooLong($password)
     {
-        return strlen($password) > self::MAX_PASSWORD_LENGTH;
+        return strlen($password) > static::MAX_PASSWORD_LENGTH;
     }
 }