Update Gemfile to reflect a modern Puppet #141

Job	Run time
Static code analysis (7.22.0, 2.7.7)	1m 32s
Static code analysis (7.22.0, 3.0.5)	1m 6s
Integration tests (puppet7, ubuntu-18.04)	3m 34s
Static code analysis (7.22.0, 3.1.3)	1m 39s
Integration tests (puppet7, ubuntu-20.04)	3m 3s
Integration tests (puppet7, ubuntu-22.04)	3m 15s
Integration tests (puppet7, centos-7)	4m 57s
Integration tests (puppet7, cento-8)	33s
Integration tests (puppet7, debian-10)	2m 38s
Integration tests (puppet7, debian-11)	3m 17s
Integration tests (puppet8, ubuntu-18.04)	3m 23s
Integration tests (puppet8, ubuntu-20.04)	3m 33s
Integration tests (puppet8, ubuntu-22.04)	3m 6s
Integration tests (puppet8, centos-7)	5m 3s
Integration tests (puppet8, cento-8)	43s
Integration tests (puppet8, debian-10)	2m 59s
Integration tests (puppet8, debian-11)	3m 6s
	47m 27s

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