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