chore(deps): Update Terraform terraform-google-modules/kms/google to v3.1.0 (#434)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Andrew Peabody <[email protected]>

Author: renovate[bot]

examples/confidential_computing/main.tf

@@ -27,7 +27,7 @@ resource "random_string" "suffix" {
 
 module "kms" {
   source  = "terraform-google-modules/kms/google"
-  version = "3.0.0"
+  version = "~> 3.0"
 
   keyring              = "${var.keyring}-${local.default_suffix}"
   location             = var.location