Bump extern/qfr from 78a3608 to 64aa806 (#167)

dependabot[bot] · web-flow · commit e38d3a8b8b96 · 2022-11-04T08:34:15.000Z
diff --git a/extern/qfr b/extern/qfr
@@ -1 +1 @@
-Subproject commit 78a36084ff2ccce07f190b7395cdb8f44ed0de8c
+Subproject commit 64aa806c79123066eeb3eb9ef1c8db987a5d9406
