feat(ci): skip Azure upload if archive already exists (#2039)
feat(ci): skip Azure upload if archive already exists (#2039)

* skip upload if archive already exists

* simplify script

* remove unused variable

* fix

Co-authored-by: mergify[bot] <b09a6ee808b67e98a221404e7aaa52e0398a4954@users.noreply.github.com>

leanprover-community/mathlib,leanprover-community/mathlib