[suiop][pulumi] handle non-poetry projects (#20751)

## Description 

Some projects don't use poetry

## Test plan 

Ran locally successfully on the services dir, which includes non-poetry
python projects.

---

## Release notes

Check each box that your changes affect. If none of the boxes relate to
your changes, release notes aren't required.

For each box you select, include information after the relevant heading
that describes the impact of your changes that a user might notice and
any actions they must take to implement updates.

- [ ] Protocol: 
- [ ] Nodes (Validators and Full nodes): 
- [ ] gRPC:
- [ ] JSON-RPC: 
- [ ] GraphQL: 
- [ ] CLI: 
- [ ] Rust SDK:

crates/suiop-cli/src/cli/pulumi/deps.rs

@@ -20,7 +20,13 @@ fn update_dependencies(path: &Path, runtime: &str) -> Result<()> {
     let output = match runtime {
         "go" => run_cmd(vec!["go", "get", "-u"], Some(cmd_opts.clone()))
             .and_then(|_o| run_cmd(vec!["go", "mod", "tidy"], Some(cmd_opts))),
-        "python" => run_cmd(vec!["poetry", "update"], Some(cmd_opts)),
+        "python" => {
+            if !path.join("pyproject.toml").exists() {
+                run_cmd(vec!["pulumi", "install"], Some(cmd_opts))
+            } else {
+                run_cmd(vec!["poetry", "update"], Some(cmd_opts))
+            }
+        }
         "typescript" => run_cmd(vec!["pnpm", "update"], Some(cmd_opts)),
         _ => unreachable!(),
     }?;