update nightly-version manually

apoelstra · apoelstra · commit f0aa99a1ec89 · 2025-12-02T20:07:18.000Z
Update from March to November...eight months of rustc having broken us.
diff --git a/nightly-version b/nightly-version
@@ -1 +1 @@
-nightly-2025-03-21
+nightly-2025-11-28
