Automated update to Github CI to rustc nightly-2026-02-06

Update Nightly Rustc Bot · Update Nightly Rustc Bot · commit 9087c39f3a22 · 2026-02-07T02:46:30.000Z
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2026-01-16
+nightly-2026-02-06
