Issue with strptime %G%V

[joshuacronemeyer]

I have a related issue with parsing dates:

irb(main):001:0> Date.strptime("202009", "%G%V")
=> Mon, 24 Feb 2020
irb(main):002:0> require "timecop"
=> true
irb(main):003:0> Date.strptime("202009", "%G%V")
=> Mon, 02 Mar 2020

Originally posted by @azhuravlev in #434