chore: update changelog for 1.2.1

Author: ptoscano

CHANGELOG.md

@@ -4,8 +4,14 @@
 ## [Unreleased]
 ### Changed
 ### Added
-- eda.builtin filters
-- eda.builtin sources
+### Fixed
+
+## [1.2.1]
+### Changed
+### Added
+- New eda.builtin filters: `dashes_to_underscores`, `insert_hosts_to_meta`, `json_filter`, `normalize_keys`
+- New eda.builtin sources: `generic`, `pg_listener`, `range`
+- Collection lifecycle configuration to deprecate, redirect, tombstone EDA filters and sources
 ### Fixed
 
 ## [1.2.0]