gitlab-ci: Select CUDA version explicitly in NVHPC job
The job added by !7946 (merged) started failing after CI hosts
were updated from NVIDIA driver version 520 to version 525. Somehow
this causes the NVHPC multi-cuda nvcc
wrapper to select CUDA 10.2
instead of 11.7 as with older driver versions.
As a workaround, add the preferred version of nvcc
to the PATH.
Issue: #24225 (closed)