Automated update to Github CI to rustc nightly-2025-06-29

Update Nightly Rustc Bot · Update Nightly Rustc Bot · commit 957b4f12386a · 2025-06-30T02:24:53.000Z
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2024-08-04
+nightly-2025-06-29
