Log Message:
devel/ruby-rspec-support: update to 3.10.3

3.10.3 (2021-11-03)

Bug Fixes:

* Use Mutex#owned? to allow RSpec::Support::ReentrantMutex to work in nested
  Fibers on Ruby 3.0 and later. (Benoit Daloze, #503, #504)

* Support end-less methods in RSpec::Support::Source::Token so that RSpec
  won't hang when an end-less method raises an error. (Yuji Nakayama, #505)