HDF5: Allow both OpenMPI v4 and OpenMPI v5 (JuliaPackaging#8002)

[skip build]

Author: eschnett

H/HDF5/build_tarballs.jl

@@ -242,7 +242,7 @@ platforms = supported_platforms()
 platforms = expand_cxxstring_abis(platforms)
 platforms = expand_gfortran_versions(platforms)
 
-platforms, platform_dependencies = MPI.augment_platforms(platforms; MPItrampoline_compat="5.3.1", OpenMPI_compat="4.1.6")
+platforms, platform_dependencies = MPI.augment_platforms(platforms; MPItrampoline_compat="5.3.1", OpenMPI_compat="4.1.6, 5")
 # TODO: Use MPI only on non-Windows platforms
 # platforms = [filter(!Sys.iswindows, mpi_platforms); filter(Sys.iswindows, platforms)]