use pcg32 for pssmlt #975

Job	Run time
macos-13 / Release / homebrew-clang	19m 41s
ubuntu-22.04 / Release / gcc-11	26m 55s
macos-13 / Debug / homebrew-clang	18m 31s
ubuntu-22.04 / Debug / gcc-11	23m 2s
macos-14 / Release / homebrew-clang	10m 16s
macos-14 / Debug / homebrew-clang	9m 14s
ubuntu-22.04 / Release / gcc-12	30m 27s
windows-2019 / Release / cl	37m 21s
ubuntu-22.04 / Debug / gcc-12	27m 39s
windows-2019 / Release / clang	39m 0s
ubuntu-22.04 / Release / gcc-13	27m 56s
windows-2019 / Release / clang-cl	37m 24s
ubuntu-22.04 / Debug / gcc-13	23m 44s
windows-2019 / Debug / cl	29m 56s
ubuntu-22.04 / Release / clang-14	26m 18s
windows-2019 / Debug / clang	33m 3s
ubuntu-22.04 / Debug / clang-14	19m 51s
windows-2019 / Debug / clang-cl	31m 10s
ubuntu-22.04 / Release / clang-15	26m 43s
ubuntu-22.04 / Debug / clang-15	20m 13s
windows-2022 / Release / cl	43m 34s
ubuntu-22.04 / Release / clang-16	26m 25s
windows-2022 / Release / clang	32m 51s
ubuntu-22.04 / Debug / clang-16	20m 26s
windows-2022 / Release / clang-cl	39m 26s
ubuntu-22.04 / Release / clang-17	26m 29s
windows-2022 / Debug / cl	33m 50s
ubuntu-22.04 / Debug / clang-17	21m 35s
windows-2022 / Debug / clang	37m 11s
windows-2022 / Debug / clang-cl	36m 26s
	13h 56m 37s

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