Update to latest zlib version, server no longer provides older version (#2720)
Update to latest zlib version, server no longer provides older version (#2720)

* Update to latest zlib version, server no longer provides older version

Funded-by: IDEAS
Project: IDEAS/xSDK

* Add alternative URL for previous release of zlib

TheTimmy/spack,skosukhin/spack,EmreAtes/spack,TheTimmy/spack,krafczyk/spack,iulian787/spack,iulian787/spack,TheTimmy/spack,tmerrick1/spack,lgarren/spack,LLNL/spack,matthiasdiener/spack,matthiasdiener/spack,lgarren/spack,tmerrick1/spack,krafczyk/spack,lgarren/spack,iulian787/spack,iulian787/spack,krafczyk/spack,EmreAtes/spack,matthiasdiener/spack,mfherbst/spack,mfherbst/spack,skosukhin/spack,lgarren/spack,skosukhin/spack,TheTimmy/spack,LLNL/spack,tmerrick1/spack,tmerrick1/spack,mfherbst/spack,TheTimmy/spack,iulian787/spack,LLNL/spack,EmreAtes/spack,skosukhin/spack,LLNL/spack,mfherbst/spack,LLNL/spack,krafczyk/spack,matthiasdiener/spack,tmerrick1/spack,skosukhin/spack,krafczyk/spack,mfherbst/spack,EmreAtes/spack,matthiasdiener/spack,lgarren/spack,EmreAtes/spack