Fix test_provider.rb in FIPS. #1167

Job	Run time
openssl-1.0.2u	55s
openssl-1.1.0l	51s
openssl-1.1.1w	55s
openssl-3.0.14	56s
openssl-3.1.6	53s
openssl-3.2.2	1m 2s
openssl-3.3.1	58s
openssl-master	3m 39s
libressl-3.1.5	55s
libressl-3.2.7	1m 2s
libressl-3.3.6	1m 6s
libressl-3.4.3	1m 1s
libressl-3.5.3	1m 1s
libressl-3.6.3	59s
libressl-3.7.3	1m 2s
libressl-3.8.4	56s
libressl-3.9.2	55s
openssl-3.0.14 with fips provider	43s
openssl-3.1.6 with fips provider	37s
openssl-3.2.2 with fips provider	39s
openssl-3.3.1 with fips provider	43s
openssl-master with fips provider	3m 22s
openssl-3.3.1 without legacy provider	55s
ruby-versions / Generate Ruby versions	2s
ubuntu-22.04 2.7	58s
ubuntu-22.04 3.0	53s
ubuntu-22.04 3.1	59s
ubuntu-22.04 3.2	1m 2s
ubuntu-22.04 3.3	57s
ubuntu-22.04 head	1m 5s
ubuntu-22.04 truffleruby	1m 33s
ubuntu-22.04 truffleruby-head	1m 44s
ubuntu-20.04 2.7	58s
ubuntu-20.04 3.0	1m 1s
ubuntu-20.04 3.1	55s
ubuntu-20.04 3.2	59s
ubuntu-20.04 3.3	59s
ubuntu-20.04 head	54s
ubuntu-20.04 truffleruby	1m 26s
ubuntu-20.04 truffleruby-head	1m 35s
macos-latest 2.7	48s
macos-latest 3.0	36s
macos-latest 3.1	39s
macos-latest 3.2	39s
macos-latest 3.3	39s
macos-latest head	39s
macos-latest truffleruby	1m 24s
macos-latest truffleruby-head	1m 4s
windows-latest 2.7	8m 2s
windows-latest 3.0	4m 15s
windows-latest 3.1	4m 32s
windows-latest 3.2	4m 30s
windows-latest 3.3	5m 32s
windows-latest head	4m 1s
windows-latest ucrt	3m 32s
windows-latest mswin	2m 57s
	1h 27m 54s

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