Log Message:
time/ruby-tzinfo: update to 2.0.3

## Version 2.0.3 - 8-Nov-2020

* Added support for handling "slim" format zoneinfo files that are \ 
produced by
  default by zic version 2020b and later. The POSIX-style TZ string is now used
  calculate DST transition times after the final defined transition in the file.
  #120.
* Fixed `TimeWithOffset#getlocal` returning a `TimeWithOffset` with the
  `timezone_offset` still assigned when called with an offset argument on JRuby
  9.3.
* Rubinius is no longer supported.