chore: update .fernignore with additional ignored files

Add replay lock, replay config, and gitattributes files to .fernignore
so that Fern SDK regeneration does not overwrite or modify them.

Key changes:
- Add `.fern/replay.lock` to .fernignore
- Add `.fern/replay.yml` to .fernignore
- Add `.gitattributes` to .fernignore

🌿 Generated with Fern

Author: fern-api[bot]

changelog.md

@@ -1,3 +1,5 @@
+## [2.0.1] - 2026-07-17
+
 ## 2.0.0 - 2026-06-24
 ### Breaking Changes
 * **`CartesiaExperimentalControlsSpeedZero`** has been renamed to `CartesiaSpeedControlZero`. Update any references to this enum in your code to use the new name.