chore: add bdk-ffi submodule at tag v1.2.0

thunderbiscuit · thunderbiscuit · commit 434956a1498a · 2025-07-22T15:25:54.000-04:00
diff --git a/bdk-ffi b/bdk-ffi
@@ -0,0 +1 @@
+Subproject commit f7fded3be5b52388f61c826e9af0d86c2f696e75
