Update to gmt 6.6.0 (#59)

Author: CovMat

LICENSE

@@ -1,6 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) 2020-2024, The GMT Team
+Copyright (c) 2020-2025, The GMT Team
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without

README.md

@@ -16,7 +16,7 @@ Run it online by clicking on one of the badges below:
 
 ## Installed packages
 
-- **GMT**: 6.5.0
+- **GMT**: 6.6.0
 - **Julia**: 1.10
 - **GMT.jl**: 1.x
 - **Python**: 3.13

environment.yml

@@ -4,7 +4,7 @@ channels:
   - nodefaults
 dependencies:
   - python=3.13
-  - gmt=6.5.0
+  - gmt=6.6.0
   - pygmt=0.16.0
   - jupyterlab=4.3.6
   - jupyter-offlinenotebook=0.3.1