chore(deps): update themes/hugo-relearn digest to 64847b1 in .gitmodules

renovate[bot] · web-flow · commit 9bf05c9628ac · 2025-12-09T03:02:12.000Z
diff --git a/themes/hugo-relearn b/themes/hugo-relearn
@@ -1 +1 @@
-Subproject commit ef6b09f665f4b3105fbea8db9f225cec158f8e4d
+Subproject commit 64847b16a3f8cdb7fcde6cfa44b2077ef685532d
