Merge pull request #24104 from lechnerc77/docs/update-provider-version

docs: update Terraform provider version to latest

Author: rbrainey

tutorials/btp-terraform-get-started/btp-terraform-get-started.md

@@ -39,7 +39,7 @@ terraform {
   required_providers {
     btp = {
       source  = "SAP/btp"
-      version = "~>1.18.1"
+      version = "~>1.20.1"
     }
   }
 }