Automated update to Github CI to rustc nightly-2025-09-19

Update Nightly Rustc Bot · Update Nightly Rustc Bot · commit 04c57e0b263e · 2025-09-20T01:52:23.000Z
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2025-09-05
+nightly-2025-09-19
