Automated update to Github CI to rustc nightly-2026-02-20

Update Nightly Rustc Bot · Update Nightly Rustc Bot · commit 7a0c76a22278 · 2026-02-21T02:44:28.000Z
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2026-02-13
+nightly-2026-02-20
