drop support for versions < 1.15.0 #480

Job	Run time
Puppet / Static validations	20s
Puppet / 8 (Ruby 3.2)	13m 38s
Puppet / 7 (Ruby 2.7)	15m 39s
Puppet / Puppet 8 - Debian 11	3m 6s
Puppet / Puppet 7 - Debian 11	3m 1s
Puppet / Puppet 8 - Rocky 8	1m 50s
Puppet / Puppet 7 - Rocky 8	2m 4s
Puppet / Puppet 8 - Rocky 9	1m 58s
Puppet / Puppet 7 - Rocky 9	2m 0s
Puppet / Puppet 8 - AlmaLinux 8	1m 48s
Puppet / Puppet 7 - AlmaLinux 8	1m 46s
Puppet / Puppet 8 - AlmaLinux 9	1m 53s
Puppet / Puppet 7 - AlmaLinux 9	1m 46s
Puppet / Puppet 8 - CentOS 7	2m 56s
Puppet / Puppet 7 - CentOS 7	2m 13s
Puppet / Puppet 8 - CentOS 8	2m 49s
Puppet / Puppet 7 - CentOS 8	2m 46s
Puppet / Puppet 8 - CentOS 9	1m 58s
Puppet / Puppet 7 - CentOS 9	2m 2s
Puppet / Distro Puppet - Archlinux rolling	3m 50s
Puppet / Puppet 8 - Ubuntu 20.04	4m 44s
Puppet / Puppet 7 - Ubuntu 20.04	3m 54s
Puppet / Puppet 8 - Ubuntu 22.04	4m 3s
Puppet / Puppet 7 - Ubuntu 22.04	3m 59s
Puppet / Test suite	0s
	1h 26m 3s

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