Some init actions may not install on arm64

[cjac]

Please perform an audit of the existing initialization action suite and determine whether architecture strings such as "x86_64" or "amd64" are included. If included, determine whether the value is hard coded or gathered from the running system.

cjac@cjac2:~/src/github/c9h/initialization-actions$ grep -rsil -e 'amd64' -e 'x86_64' . | grep -v "~$" ./mlvm/pytorch.sh ./rapids/README.md ./rapids/Dockerfile ./gpu/README.md ./gpu/install_gpu_driver.sh ./gpu/install_gpu_driver.generated.sh ./gpu/mig.sh ./gpu/Dockerfile ./docker/docker.sh ./changed.20250108.tar ./templates/gpu/bitbucket ./rstudio/rstudio.sh ./cloud-sql-proxy/cloud-sql-proxy.sh ./cloud-sql-proxy/cloud-sql-proxy.sh-final ./conda/README.md ./conda/bootstrap-conda.sh ./prometheus/prometheus.sh ./spark-rapids/spark-rapids.sh ./spark-rapids/mig.sh ./hue/hue.sh ./otel/otel.sh ./cloudbuild/Dockerfile