Merge topic 'update-zstd' into release-3.22

ddced0c6b6 zstd: Fix trace compilation on AIX
ee98d9378f zstd: Fix ZSTD_VecMask_next compilation of software ctz implementation
eb8db99596 Merge branch 'upstream-zstd' into update-zstd
da1e841ccf zstd 2021-05-14 (a488ba11)
8c65ea4744 zstd: Update script to get zstd 1.5.0

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6622