outputs: stop URL-encoding credentials in db_connection_uri; update README; include deletion_protection in instance

Author: simplyalam

main.tf

@@ -60,6 +60,7 @@ resource "aws_db_instance" "this" {
   maintenance_window      = var.maintenance_window
 
   skip_final_snapshot = var.skip_final_snapshot
+  deletion_protection = var.deletion_protection
 
   tags = var.tags
 }

outputs.tf

@@ -38,8 +38,8 @@ output "db_connection_uri" {
   description = "PostgreSQL connection URI including credentials (sensitive)"
   value = format(
     "postgresql://%s:%s@%s:%d/%s",
-    urlencode(var.username),
-    urlencode(random_password.master.result),
+    var.username,
+    random_password.master.result,
     aws_db_instance.this.address,
     aws_db_instance.this.port,
     var.database_name,