Automated update to Github CI to rustc nightly-2026-01-02

Update Nightly Rustc Bot · Update Nightly Rustc Bot · commit 16b96484c441 · 2026-01-03T02:18:00.000Z
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2025-03-21
+nightly-2026-01-02
