Automated update to Github CI to rustc nightly-2026-02-07

Update Nightly Rustc Bot · Update Nightly Rustc Bot · commit 57ed5ce4fd4a · 2026-02-09T00:51:06.000Z
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2025-09-27
+nightly-2026-02-07
