Update changelogs from fern repo (#3484)

Co-authored-by: seymurkafkas <5654109+seymurkafkas@users.noreply.github.com>

Author: fern-support

fern/products/sdks/overview/python/changelog/2026-02-03.mdx

@@ -0,0 +1,7 @@
+## 4.54.3
+**`(fix):`** Fix mypy type checking compatibility with pydantic field aliases. When fields have aliases
+(e.g., `bucket_id` with alias `bucketId`), the pydantic.Field(alias=...) is now placed inside
+the Annotated type hint instead of as the default value. This makes mypy see the Python field
+name in the constructor signature while Pydantic still uses the alias for JSON serialization.
+
+