h5cpp: Download from github release instead of git repo (#14573)
h5cpp: Download from github release instead of git repo (#14573)

* h5cpp: Download from github release instead of git repo

* Correct typo in package description

LLNL/spack,LLNL/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,iulian787/spack,iulian787/spack,iulian787/spack,LLNL/spack