x509: fix handling of multiple URIs in Certificate#crl_uris #1108

Job	Run time
openssl-1.0.2u	2m 26s
openssl-1.1.0l	1m 32s
openssl-1.1.1w	1m 43s
openssl-3.0.13	2m 46s
openssl-3.1.5	2m 50s
openssl-3.2.1	3m 24s
openssl-3.3.0	3m 18s
libressl-3.1.5	2m 6s
libressl-3.2.7	2m 14s
libressl-3.3.6	2m 15s
libressl-3.4.3	2m 17s
libressl-3.5.3	2m 14s
libressl-3.6.3	2m 18s
libressl-3.7.3	2m 16s
libressl-3.8.4	2m 11s
libressl-3.9.1	2m 7s
openssl-3.0.13 fips	2m 46s
openssl-3.1.5 fips	2m 49s
openssl-3.2.1 fips	3m 6s
openssl-3.3.0 fips	3m 31s
openssl-head	3m 31s
openssl-head fips	3m 24s
openssl-head no-legacy	3m 25s
ruby-versions / Generate Ruby versions	4s
ubuntu-22.04 2.7	57s
ubuntu-22.04 3.0	58s
ubuntu-22.04 3.1	1m 2s
ubuntu-22.04 3.2	1m 5s
ubuntu-22.04 3.3	56s
ubuntu-22.04 head	1m 1s
ubuntu-22.04 truffleruby	1m 32s
ubuntu-22.04 truffleruby-head	1m 40s
ubuntu-20.04 2.7	56s
ubuntu-20.04 3.0	57s
ubuntu-20.04 3.1	55s
ubuntu-20.04 3.2	1m 0s
ubuntu-20.04 3.3	55s
ubuntu-20.04 head	51s
ubuntu-20.04 truffleruby-head	1m 31s
macos-latest 2.7	52s
macos-latest 3.0	38s
macos-latest 3.1	51s
macos-latest 3.2	39s
macos-latest 3.3	47s
macos-latest head	50s
macos-latest truffleruby-head	1m 10s
windows-latest 2.7	4m 56s
windows-latest 3.0	3m 47s
windows-latest 3.1	3m 47s
windows-latest 3.2	5m 38s
windows-latest 3.3	4m 9s
windows-latest head	4m 14s
windows-latest ucrt	3m 56s
windows-latest mswin	2m 49s
	1h 55m 52s

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