community/ruby-rmagick: 5.3.0-r0 fails on 3.19 builders

all 3.19 builders report

Pending: (Failures listed here are expected and do not affect your suite's status)
[33m
  1) Magick::Image#channel_entropy raises an error on earlier versions[0m
     [36m# Supported before 6.9.0; running 7.1.1[0m
[36m     # ./spec/rmagick/image/channel_entropy_spec.rb:36
[0m[33m
  2) Magick::Image#liquid_rescale works[0m
     [36m# liquid_rescale not implemented.[0m
[36m     # ./spec/rmagick/image/liquid_rescale_spec.rb:2
[0m

Failures:

  1) Magick::Image#gamma works
     [31mFailure/Error: expect(image.gamma).to eq(0.45454543828964233)[0m
     [31m[0m
     [31m  expected: 0.45454543828964233[0m
     [31m       got: 0.45454545454545453[0m
     [31m[0m
     [31m  (compared using ==)[0m
     [36m# ./spec/rmagick/image/gamma_spec.rb:7:in `block (2 levels) in <top (required)>'[0m

Finished in 49.85 seconds (files took 0.51271 seconds to load)
[31m740 examples, 1 failure, 2 pending[0m

Failed examples:

[31mrspec ./spec/rmagick/image/gamma_spec.rb:2[0m [36m# Magick::Image#gamma works[0m

>>> ERROR: ruby-rmagick: check failed

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