Fix puppetserver ca sign with puppet 8. #1441

Job	Run time
Puppet / Static validations	27s
Puppet / 8 (Ruby 3.2)	6m 52s
Puppet / Puppet 8 - OracleLinux 9	5m 21s
Puppet / OpenVox 8 - OracleLinux 9	5m 1s
Puppet / OpenVox 8 - Debian 11	4m 51s
Puppet / OpenVox 8 - AlmaLinux 9	4m 50s
Puppet / Puppet 8 - AlmaLinux 9	4m 48s
Puppet / OpenVox 8 - Debian 12	5m 3s
Puppet / Puppet 8 - Ubuntu 22.04	4m 55s
Puppet / OpenVox 8 - CentOS 9	5m 28s
Puppet / Puppet 8 - Debian 11	4m 29s
Puppet / Puppet 8 - Debian 12	2m 49s
Puppet / Puppet 8 - Rocky 9	5m 3s
Puppet / OpenVox 8 - Rocky 9	4m 49s
Puppet / OpenVox 8 - Ubuntu 22.04	5m 12s
Puppet / Distro Puppet - Archlinux rolling	1m 34s
Puppet / Puppet 8 - CentOS 9	6m 4s
Puppet / Test suite	3s
	1h 17m 39s

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