chore(ci): bump poetry version to 2.3.3 in version-bump-prs workflow

Poetry has been updated to 2.3.3 in OpenHands (OpenHands/OpenHands#13711),
keeping the version consistent across repos.

Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: Test Admin

.github/workflows/version-bump-prs.yml

@@ -105,7 +105,7 @@ jobs:
 
             - name: Install Poetry
               run: |
-                  pipx install poetry==2.2.1
+                  pipx install poetry==2.3.3
 
             # OpenHands-CLI step runs first since it's simpler and less error-prone
             - name: Create PR for OpenHands-CLI repo