Update changelogs from fern repo (#5258)

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

Author: fern-support

fern/products/sdks/generators/python/changelog/2026-04-30.mdx

@@ -0,0 +1,6 @@
+## 5.8.4
+**`(chore):`** Bump @fern-api/generator-cli to 0.9.21, which includes @fern-api/replay
+0.14.0 with fixes for silent customization loss across apply and resolve
+paths, per-patch-region diff, and clean follow-up patch preservation.
+
+