pkey: Use openssl generated pkcs8 key instead #1289

Job	Run time
openssl-1.0.2u	57s
openssl-1.1.0l	58s
openssl-1.1.1w	58s
openssl-3.0.15	1m 15s
openssl-3.1.7	59s
openssl-3.2.3	56s
openssl-3.3.2	57s
openssl-3.4.0	1m 3s
openssl-master	3m 46s
libressl-3.1.5	56s
libressl-3.2.7	59s
libressl-3.3.6	58s
libressl-3.4.3	58s
libressl-3.5.3	58s
libressl-3.6.3	1m 0s
libressl-3.7.3	55s
libressl-3.8.4	1m 5s
libressl-3.9.2	59s
libressl-4.0.0	54s
openssl-3.0.15 with fips provider	55s
openssl-3.1.7 with fips provider	51s
openssl-3.2.3 with fips provider	49s
openssl-3.3.2 with fips provider	49s
openssl-3.4.0 with fips provider	55s
openssl-master with fips provider	3m 59s
openssl-3.4.0 without legacy provider	57s
ruby-versions / Generate Ruby versions	3s
ubuntu-22.04 2.7	1m 2s
ubuntu-22.04 3.0	1m 2s
ubuntu-22.04 3.1	56s
ubuntu-22.04 3.2	1m 2s
ubuntu-22.04 3.3	1m 4s
ubuntu-22.04 head	1m 4s
ubuntu-22.04 truffleruby	1m 36s
ubuntu-22.04 truffleruby-head	1m 40s
ubuntu-20.04 2.7	59s
ubuntu-20.04 3.0	52s
ubuntu-20.04 3.1	55s
ubuntu-20.04 3.2	59s
ubuntu-20.04 3.3	1m 3s
ubuntu-20.04 head	57s
ubuntu-20.04 truffleruby	1m 32s
ubuntu-20.04 truffleruby-head	1m 42s
macos-latest 2.7	51s
macos-latest 3.0	36s
macos-latest 3.1	37s
macos-latest 3.2	36s
macos-latest 3.3	36s
macos-latest head	38s
macos-latest truffleruby	57s
macos-latest truffleruby-head	1m 1s
windows-latest 2.7	4m 35s
windows-latest 3.0	5m 5s
windows-latest 3.1	4m 17s
windows-latest 3.2	4m 24s
windows-latest 3.3	5m 42s
windows-latest head	3m 54s
windows-latest ucrt	3m 56s
windows-latest mswin	2m 38s
	1h 29m 37s

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