chore(deps): bump resource_group::terraform-ibm-resource-group

Bumps [resource_group::terraform-ibm-resource-group](https://github.com/terraform-ibm-modules/terraform-ibm-resource-group) from 1.1.0 to 1.1.6.
- [Release notes](https://github.com/terraform-ibm-modules/terraform-ibm-resource-group/releases)
- [Changelog](https://github.com/terraform-ibm-modules/terraform-ibm-resource-group/blob/main/.releaserc)
- [Commits](terraform-ibm-modules/terraform-ibm-resource-group@v1.1.0...v1.1.6)

---
updated-dependencies:
- dependency-name: resource_group::github::terraform-ibm-modules/terraform-ibm-resource-group::v1.1.0
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

main.tf

@@ -23,7 +23,7 @@ resource "ibm_is_ssh_key" "generated_key" {
 # IF a resource group was not provided, create a new one
 module "resource_group" {
   count               = var.existing_resource_group != "" ? 0 : 1
-  source              = "git::https://github.com/terraform-ibm-modules/terraform-ibm-resource-group.git?ref=v1.1.0"
+  source              = "git::https://github.com/terraform-ibm-modules/terraform-ibm-resource-group.git?ref=v1.1.6"
   resource_group_name = "${local.prefix}-resource-group"
 }