(PA-7437) Drop expired key and rotate "current" key #416

Job	Run time
Nightly / Puppet7 gem on Ruby 2.7 on Linux	2m 14s
Nightly / Puppet8 gem on Ruby 3.1 on Linux	1m 18s
Released / Puppet7 gem on Ruby 2.7 on Linux	1m 16s
Nightly / Puppet7 gem on Ruby 2.7 on macOS	1m 24s
Released / Puppet8 gem on Ruby 3.1 on Linux	58s
Nightly / Puppet8 gem on Ruby 3.1 on macOS	1m 7s
Released / Puppet7 gem on Ruby 2.7 on macOS	1m 7s
Nightly / Puppet7 gem on Ruby 2.7 on Windows	9m 12s
Released / Puppet8 gem on Ruby 3.1 on macOS	48s
Nightly / Puppet8 gem on Ruby 3.1 on Windows	6m 38s
Released / Puppet7 gem on Ruby 2.7 on Windows	4m 33s
Released / Puppet8 gem on Ruby 3.1 on Windows	4m 51s
	35m 26s

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