Merge branch 'nccl-2-15-2023' into '2023'

Newer NCCL

See merge request software-team/easybuild!1399

Golden_Repo/n/NCCL/NCCL-default-GCCcore-11.3.0-CUDA-11.7.eb

 name = 'NCCL'
 version = 'default'
-local_realversion = '2.14.3-1'
+local_realversion = '2.15.1-1'
 versionsuffix = '-CUDA-%(cudashortver)s'
 
 homepage = 'https://developer.nvidia.com/nccl'
@@ -19,7 +19,7 @@ sources = [{
         'recursive': True,
     },
 }]
-checksums = ['8108e00bcf995666330484cf24a5cc52c3a392acaa5aeabf88e2e168e07c291d']
+checksums = ['3623d28598ec7283358d571ffcde1b5660c2b6050f0bd6731fe03fe8bad2a337']
 
 builddependencies = [('binutils', '2.38')]