libhoney 1.21.0

• bump 0.10.0 ~> 0.5

• bundler 2.5.10 >= 0

• lockstep 0.0.3 >= 0

• minitest 5.22.3 ~> 5.0

• minitest-reporters 1.6.1 >= 0

• rake 13.2.1 ~> 13.0

• rubocop 0.68.1 < 0.69

• sinatra 4.0.0 >= 0

• sinatra-contrib 4.0.0 >= 0

• spy 1.0.5 ~> 1.0

• webmock 3.23.0 ~> 3.4

• yard 0.9.36 >= 0

• yardstick 0.9.9 ~> 0.9