CHANGELOG.md in lightgbm-0.3.0 vs CHANGELOG.md in lightgbm-0.3.1

@@ -1,4 +1,8 @@
+## 0.3.1 (2023-09-13)
+
+- Updated LightGBM to 4.1.0
+
 ## 0.3.0 (2023-07-22)
 
 - Updated LightGBM to 4.0.0
 - Fixed error with `dup` and `clone`
 - Dropped support for Ruby < 3