FIX boundaries name.

Author: petrasvestartas

src/compas_libigl/boundaries.py

@@ -29,5 +29,5 @@ def trimesh_boundaries(M):
     """
     V, F = M
     F = np.asarray(F, dtype=np.int32)
-    result: VectorVectorInt = _boundaries.trimesh_boundaries(F)
+    result: _types_std.VectorVectorInt = _boundaries.trimesh_boundaries(F)
     return [list(loop) for loop in result]