Update changelogs from fern repo (#5110)

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

Author: fern-support

fern/products/sdks/generators/python/changelog/2026-04-23.mdx

@@ -0,0 +1,7 @@
+## 5.5.10
+**`(chore):`** Bump @fern-api/generator-cli to 0.9.12, which ships the FER-9980 autoversion
+pipeline (AutoVersionStep runs between the [fern-generated] commit and replay
+apply, diffing pure generator output across runs to drive a semver bump and
+changelog entry via FAI) and pins @fern-api/replay to 0.12.0.
+
+