Update mimalloc-version to 2.3.1 from 2.2.3#5

zosopentoolsmain wants to merge 1 commit intomainzopencommunity/mimallocport:mainfrom

bump-mimalloc-version-2.3.1zopencommunity/mimallocport:bump-mimalloc-version-2.3.1Copy head branch name to clipboard