Automated update to Github CI to rustc nightly-2025-07-19

Update Nightly Rustc Bot · Update Nightly Rustc Bot · commit 1f7573a799a2 · 2025-07-21T00:41:51.000Z
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2025-07-15
+nightly-2025-07-19
