fix: update workspaces

silverback/_cli.py

@@ -330,13 +330,15 @@ def update_workspace(
         raise click.UsageError(
             "No update name or slug found. Please enter a name or slug to update."
         )
+    elif update_name == "" or update_slug == "":
+        raise click.UsageError("Empty string value found for name or slug.")
 
     platform.update_workspace(
         workspace=workspace,
         update_name=update_name,
         update_slug=update_slug,
     )
-    click.echo(f"{click.style('SUCCESS', fg='green')}: Updated '{update_name}'")
+    click.echo(f"{click.style('SUCCESS', fg='green')}: Updated '{workspace}'")
 
 
 @workspaces.command(name="delete", section="Platform Commands (https://silverback.apeworx.io)")

silverback/cluster/client.py

@@ -464,9 +464,14 @@ def update_workspace(
         update_name: str | None,
     ):
         workspace_id = self.workspaces[workspace].id
+        form_data = dict()
+        if update_slug:
+            form_data["slug"] = update_slug
+        if update_name:
+            form_data["name"] = update_name
         response = self.patch(
             f"/workspaces/{workspace_id}",
-            data=dict(slug=update_slug, name=update_name),
+            data=form_data,
         )
         handle_error_with_response(response)
         update_workspace = Workspace.model_validate_json(response.text)