Add 'sigalgs=' method for setting accepted signature algorithms #1095

Job	Run time
openssl-1.0.2u	2m 4s
openssl-1.1.0l	1m 42s
openssl-1.1.1w	1m 21s
openssl-3.0.13	2m 29s
openssl-3.1.5	2m 38s
openssl-3.2.1	3m 4s
openssl-3.3.0	2m 59s
libressl-3.1.5	2m 7s
libressl-3.2.7	2m 13s
libressl-3.3.6	2m 43s
libressl-3.4.3	2m 17s
libressl-3.5.3	2m 14s
libressl-3.6.3	2m 40s
libressl-3.7.3	2m 19s
libressl-3.8.4	2m 11s
libressl-3.9.1	2m 8s
openssl-3.0.13 fips	2m 41s
openssl-3.1.5 fips	2m 44s
openssl-3.2.1 fips	3m 5s
openssl-3.3.0 fips	3m 20s
openssl-head	3m 10s
openssl-head fips	3m 24s
openssl-head no-legacy	3m 2s
ruby-versions / Generate Ruby versions	2s
ubuntu-22.04 2.7	59s
ubuntu-22.04 3.0	34s
ubuntu-22.04 3.1	38s
ubuntu-22.04 3.2	37s
ubuntu-22.04 3.3	35s
ubuntu-22.04 head	37s
ubuntu-22.04 truffleruby	1m 32s
ubuntu-22.04 truffleruby-head	1m 39s
ubuntu-20.04 2.7	59s
ubuntu-20.04 3.0	31s
ubuntu-20.04 3.1	35s
ubuntu-20.04 3.2	27s
ubuntu-20.04 3.3	32s
ubuntu-20.04 head	28s
ubuntu-20.04 truffleruby-head	1m 41s
macos-latest 2.7	50s
macos-latest 3.0	29s
macos-latest 3.1	26s
macos-latest 3.2	35s
macos-latest 3.3	30s
macos-latest head	27s
macos-latest truffleruby-head	1m 14s
windows-latest 2.7	5m 52s
windows-latest 3.0	3m 50s
windows-latest 3.1	4m 0s
windows-latest 3.2	5m 46s
windows-latest 3.3	5m 8s
windows-latest head	4m 15s
windows-latest ucrt	3m 42s
windows-latest mswin	2m 44s
	1h 50m 49s

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