drop support for EL7 #171

Job	Run time
Puppet / Static validations	33s
Puppet / 8 (Ruby 3.2)	24s
Puppet / 7 (Ruby 2.7)	43s
Puppet / Puppet 8 - AlmaLinux 8	1m 53s
Puppet / Puppet 7 - AlmaLinux 8	1m 53s
Puppet / Puppet 8 - AlmaLinux 9	1m 58s
Puppet / Puppet 7 - AlmaLinux 9	1m 58s
Puppet / Puppet 8 - Rocky 8	2m 2s
Puppet / Puppet 7 - Rocky 8	2m 5s
Puppet / Puppet 8 - Rocky 9	2m 2s
Puppet / Puppet 7 - Rocky 9	1m 50s
Puppet / Puppet 8 - OracleLinux 8	2m 30s
Puppet / Puppet 7 - OracleLinux 8	2m 26s
Puppet / Puppet 8 - OracleLinux 9	1m 58s
Puppet / Puppet 7 - OracleLinux 9	2m 0s
Puppet / Puppet 8 - Ubuntu 20.04	2m 54s
Puppet / Puppet 7 - Ubuntu 20.04	2m 39s
Puppet / Puppet 8 - Ubuntu 22.04	2m 37s
Puppet / Puppet 7 - Ubuntu 22.04	2m 39s
Puppet / Puppet 8 - Debian 11	2m 34s
Puppet / Puppet 7 - Debian 11	2m 34s
Puppet / Puppet 8 - Debian 12	2m 19s
Puppet / Puppet 7 - Debian 12	2m 9s
Puppet / Distro Puppet - Archlinux rolling	2m 44s
Puppet / Test suite	4s
	49m 28s

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