Automated update to Github CI to rustc nightly-2026-02-28

Update Nightly Rustc Bot · Update Nightly Rustc Bot · commit 84ee8da6fb20 · 2026-03-02T00:49:03.000Z
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2025-09-27
+nightly-2026-02-28
