Add tests using Intel MPI 2021.7 wheels

Author: dalcinl

.cibw/run-tests-pypip.sh

@@ -4,7 +4,7 @@ set -euo pipefail
 
 mpich=("4.3" "4.2" "4.1" "4.0" "3.4")
 openmpi=("5.0" "4.1")
-impi=("2021.15" "2021.10")
+impi=("2021.15" "2021.10" "2021.7")
 msmpi=()
 
 mpi="$1"