doc: update CHANGELOG

Author: flavorjones

CHANGELOG.md

@@ -6,12 +6,23 @@
 
 ### Ruby
 
-This release drops support for Ruby 2.7.
+This release drops support for Ruby 2.7. [#453] @flavorjones
+
+
+### Added
+
+- `Database#busy_handler_timeout=` introduced as an alternative to `#busy_timeout=` that can be used when it's desired to release the GVL between retries. [#443] @fractaledmind
+
+
+### Improved
+
+- Avoid leaking memory for statements that are not closed properly. [#392] @haileys
+- Moved some C code into Ruby. [#451, #455] @tenderlove
 
 
 ### Removed
 
-- Remove `SQLite3::VersionProxy` which has been deprecated since v1.3.2.
+- Remove `SQLite3::VersionProxy` which has been deprecated since v1.3.2. [#453] @flavorjones
 
 
 ## 1.7.0 / 2023-12-27