chore(deps): bump onnx-weekly from 1.21.0.dev20251124 to 1.21.0.dev20251215 in /requirements/ci (#2740)

dependabot[bot] · web-flow · commit 20a99d1c4f32 · 2025-12-19T22:38:36.000Z
diff --git a/requirements/ci/requirements-onnx-weekly.txt b/requirements/ci/requirements-onnx-weekly.txt
@@ -1 +1 @@
-onnx-weekly==1.21.0.dev20251124
+onnx-weekly==1.21.0.dev20251215
