🤖 ci(vault): declare dance-lessons-coach JWT role + ops policy (#1)

Co-authored-by: Gabriel Radureau <arcodange@gmail.com>
Co-committed-by: Gabriel Radureau <arcodange@gmail.com>

hashicorp-vault/iac/terraform.tfvars

@@ -1,6 +1,7 @@
 applications = [
   { name = "webapp" },
   { name = "erp" },
+  { name = "dance-lessons-coach" },
   {
     name                   = "cms"
     ops_policies               = ["factory__cf_r2_arcodange_tf"]