intel: fixed version number (update4 is 18.0.5) (#15915)
intel: fixed version number (update4 is 18.0.5) (#15915)

fixes #15811

See https://software.intel.com/en-us/articles/intel-compiler-and-composer-update-version-numbers-to-compiler-version-number-mapping
LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,LLNL/spack,iulian787/spack,iulian787/spack,LLNL/spack,iulian787/spack,LLNL/spack