Drop RSpec 2 & Ruby 1 compatiblity #90

Job	Run time
spec (windows-latest ruby 3.2 \| puppet https://github.com/puppetlabs/puppet) / spec	6m 41s
spec (ubuntu-latest ruby 2.7 \| puppet ~> 7.0) / spec	51s
spec (windows-latest ruby 2.7 \| puppet ~> 7.0) / spec	3m 56s
spec (ubuntu-latest ruby 3.2 \| puppet https://github.com/puppetlabs/puppet) / spec	42s
	12m 10s

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