Update changelogs from fern repo (#5188)

Co-authored-by: dsinghvi <10870189+dsinghvi@users.noreply.github.com>

Author: fern-support

fern/products/sdks/generators/swift/changelog/2026-04-27.mdx

@@ -0,0 +1,6 @@
+## 0.33.0
+**`(feat):`** Show explicit auth parameters in README snippets (errors, custom networking,
+environments sections) instead of eliding with `(...)`. Uses IR `placeholder`
+fields when configured, with sensible defaults.
+
+