amazonImage: Upload disks as GP3 for cheaper & faster IO (#109027)

GP3 is always faster and cheaper than GP2, so sticking to GP2 is
leaving money on the table.

https://cloudwiry.com/ebs-gp3-vs-gp2-pricing-comparison/

Changed files
+1 -1
nixos
maintainers
scripts
+1 -1
nixos/maintainers/scripts/ec2/create-amis.sh
···
log "Registering snapshot $snapshot_id as AMI"
local block_device_mappings=(
-
"DeviceName=/dev/xvda,Ebs={SnapshotId=$snapshot_id,VolumeSize=$image_logical_gigabytes,DeleteOnTermination=true,VolumeType=gp2}"
+
"DeviceName=/dev/xvda,Ebs={SnapshotId=$snapshot_id,VolumeSize=$image_logical_gigabytes,DeleteOnTermination=true,VolumeType=gp3}"
)
local extra_flags=(