Log Message:
databases/ruby-mysql2: update to 0.5.3

0.5.3 (2019-11-27)

New Features

* Expose Windows client authentication (#1018)

Bug Fixes

* Support more MySQL encodings and warn rather than crash on unsupported
  encodings (#1040)

Changes

* Precompiled mysql2 gem for Windows supports Ruby 2.2, 2.3, 2.4, 2.5,
  2.6. Windows Ruby 2.0 and 2.1 are dropped.
* Keyword arguments have to be explicitly double-splatted in Ruby 2.7+
  (#1084)
* Add Centos to CI matrix (#989, #1085)
* Remove spec from gem (#1044)
* Replace Win32API with Fiddle, update appveyor.yml (#1053)
* Update README to clarify the protocol value in DATABASE_URL (#1047)
* Improve performance to call Mysql2::Result#each and Mysql2::Result#fields
  (#1046)
* Fix fragile specs due to clock skew and timeout/threads corruption (#1041)
* README updates (#1002, #1038)