docs: v3.3.5 changelog

Author: kozistr

docs/changelogs/v3.3.5.md

@@ -1,8 +1,19 @@
 ### Change Log
 
+### Feature
+
+* Implement `FOCUS` optimizer. (#330, #331)
+    * [First Order Concentrated Updating Scheme](https://arxiv.org/abs/2501.12243) 
+
+### Update
+
+* Support `OrthoGrad` variant to `Ranger25`. (#332)
+
 ### Fix
 
 * Add the missing `state` property in `OrthoGrad` optimizer. (#326, #327)
+* Add the missing `state_dict`, and `load_state_dict` methods to `TRAC` and `OrthoGrad` optimizers. (#332)
+* Skip when the gradient is sparse in `OrthoGrad` optimizer. (#332)
 
 ### Contributions