Update changelogs from fern repo (#3326)

Author: fern-support

fern/products/sdks/overview/ruby/changelog/2026-01-28.mdx

@@ -0,0 +1,11 @@
+## 1.0.0-rc83
+**`(fix):`** Fix request body serialization bug where path/query/header parameters were incorrectly
+serialized as nil values in the request body. For endpoints with inlined request bodies
+that also have path, query, or header parameters, the wrapper type (which includes all
+endpoint parameters) was being created with only body properties, causing non-body fields
+to be nil and serialized as null in the JSON body. The fix uses a serialize-then-split
+pattern: serialize ALL params through the wrapper type first, then remove non-body params
+from the serialized result. This ensures proper type conversion while keeping non-body
+params out of the request body.
+
+