Run ruff format and check after code generation in spec_update (#567)

CI runs `ruff format --check` and `ruff check` on the dropbox
package, so the spec_update workflow needs to format and fix the
generated code before committing.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: cguldner

.github/workflows/spec_update.yml

@@ -83,7 +83,10 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -r requirements.txt
+          pip install ruff
           python generate_base_client.py
+          ruff format dropbox
+          ruff check --fix dropbox
 
       - name: Close Old Pull Requests
         id: close-old-prs