tests

Update address of PDI repo in README.md #193

Job	Run time
debuntu (ubuntu/focal, openmpi, mini)	7m 9s
spack (latest, gcc, openmpi, mini)	7m 40s
debuntu (ubuntu/focal, openmpi, all)	5m 43s
spack (latest, gcc, openmpi, all)	6m 5s
debuntu (ubuntu/focal, mpich, mini)	6m 46s
spack (latest, gcc, mpich, mini)	8m 4s
debuntu (ubuntu/focal, mpich, all)	5m 34s
debuntu (ubuntu/rolling, openmpi, mini)	6m 34s
spack (latest, gcc, mpich, all)	6m 1s
debuntu (ubuntu/rolling, openmpi, all)	5m 16s
spack (latest, clang, openmpi, mini)	6m 53s
debuntu (ubuntu/rolling, mpich, mini)	10m 57s
spack (latest, clang, openmpi, all)	5m 36s
debuntu (ubuntu/rolling, mpich, all)	5m 11s
spack (latest, clang, mpich, mini)	7m 7s
debuntu (debian/bookworm, openmpi, mini)	7m 17s
spack (latest, clang, mpich, all)	5m 41s
debuntu (debian/bookworm, openmpi, all)	5m 50s
spack (oldest, gcc, openmpi, mini)	7m 40s
debuntu (debian/bookworm, mpich, mini)	7m 23s
spack (oldest, gcc, openmpi, all)	6m 4s
debuntu (debian/bookworm, mpich, all)	5m 41s
debuntu (debian/unstable, openmpi, mini)	7m 3s
spack (oldest, gcc, mpich, mini)	7m 39s
debuntu (debian/unstable, openmpi, all)	5m 33s
spack (oldest, gcc, mpich, all)	6m 2s
debuntu (debian/unstable, mpich, mini)	6m 37s
spack (oldest, clang, openmpi, mini)	6m 37s
debuntu (debian/unstable, mpich, all)	5m 0s
spack (oldest, clang, openmpi, all)	5m 27s
spack (oldest, clang, mpich, mini)	6m 45s
spack (oldest, clang, mpich, all)	5m 4s
	3h 27m 59s

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