Externals Update, master branch (2021.11.12.)

Updated all projects to atlasexternals-1.0.121. The changes wrt. atlasexternals-1.0.120 are the following (atlasexternals@2.0.120...2.0.121):

• Made the setting of the VALGRIND_LIB environment variable "smarter" in Findvalgrind.cmake (fixing ATLINFR-4324, pinging @amete);
• Made it possible not to use CUDA in onnxruntime, even if it is available (meant for ATLASRECTS-6680, pinging @dbakshig and @mfenton);
• Updated FindCrmc.cmake to be compatible with Crmc >=2.0 (in order to fix a master--dev4LCG build failure, pinging @ewelina).

Connected to the ONNX Runtime update, I also made Athena build that external without its CUDA support. This is meant as a quick fix for ATLASRECTS-6680. As we started discussing on that ticket, we will need to find some better solution for making CUDA capabilities available in this external without bloating reconstruction jobs.

Note that in order to speed up this MR, I'm not setting either full-build or full-unit-tests on it. The CI will not correctly re-build ONNX Runtime without full-build. But for the CI that should be fine... 🤔