update changelog

Author: github-actions[bot]

docs/changelog/changelog.mdx

@@ -4,6 +4,19 @@ icon: "clock"
 iconType: "solid"
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+<Update label="v0.50.0" description="March 12, 2025">
+### [Removes JWT authentication feature.](https://github.com/codegen-sh/codegen-sdk/releases/tag/v0.50.0)
+- Remove JWT authentication feature
+</Update>
+
+
+<Update label="v0.49.6" description="March 12, 2025">
+### [Enhancements to error handling and file validation.](https://github.com/codegen-sh/codegen-sdk/releases/tag/v0.49.6)
+- Improved error handling for file not found errors in RelaceEditTool
+- Added file validity and existence checks to create_file
+- Updated API reference
+</Update>
+
 <Update label="v0.49.5" description="March 12, 2025">
 ### [Fixes IndexError and file parse issue.](https://github.com/codegen-sh/codegen-sdk/releases/tag/v0.49.5)
 - Fix IndexError when message.content is empty