depend on mellon v1.6.1

for better check of floats in plot_trajectory and plot_trajectories

Author: katosh

pyproject.toml

@@ -36,7 +36,7 @@ dependencies = [
     "matplotlib>=3.8.0",
     "anndata>=0.8.0",
     "scanpy>=1.6.0",
-    "mellon>=1.3.0",
+    "mellon>=1.6.1",
     "ml_dtypes>=0.5.0",
     "igraph>=0.11.8",
 ]