feat: add H100 machine-type to ruleset (#335)

Co-authored-by: Michael Cook <mcook@octo.ai>

Author: mikecook

rules/utils.go

@@ -249,6 +249,9 @@ var validMachineTypes = map[string]bool{
 	"a2-ultragpu-4g": true,
 	"a2-ultragpu-8g": true,
 
+	// H100 machine types: https://cloud.google.com/compute/docs/gpus#h100-gpus
+	"a3-highgpu-8g": true,
+
 	// L4 machine types: https://cloud.google.com/compute/docs/gpus#l4-gpus
 	"g2-standard-4":  true,
 	"g2-standard-8":  true,