Use by default gcc-10 in CI
This MR sets by default gcc-10 in the CI. It also sets CUDA 11.2 in the CI in order to be compatible with gcc-10.
Related issue: https://sft.its.cern.ch/jira/browse/SPI-1826
This MR sets by default gcc-10 in the CI. It also sets CUDA 11.2 in the CI in order to be compatible with gcc-10.
Related issue: https://sft.its.cern.ch/jira/browse/SPI-1826