fix(ci): remove deprecated --no-update flag from poetry lock

Poetry 2.x removed the --no-update option. The default behavior of
`poetry lock` in v2 already preserves existing locked versions unless
constraints have changed, matching the old --no-update semantics.

Signed-off-by: kryanbeane <bryankeane0@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

Author: 2 people

.github/workflows/update-versions.yaml

@@ -110,7 +110,7 @@ jobs:
       - name: Regenerate poetry.lock
         if: inputs.new_ray_version != '' || inputs.new_sdk_version != ''
         run: |
-          poetry lock --no-update
+          poetry lock
           echo "Regenerated poetry.lock"
 
       - name: Update runtime image SHAs