v0.15.0 release (#360)

Author: mensfeld

CHANGELOG.md

@@ -1,13 +1,13 @@
 # Rdkafka Changelog
 
-## 0.15.0 (Unreleased)
+## 0.15.0 (2023-12-03)
 - **[Feature]** Add `Admin#metadata` (mensfeld)
 - **[Feature]** Add `Admin#create_partitions` (mensfeld)
 - **[Feature]** Add `Admin#delete_group` utility (piotaixr)
 - **[Feature]** Add Create and Delete ACL Feature To Admin Functions (vgnanasekaran)
 - **[Feature]** Support `#assignment_lost?` on a consumer to check for involuntary assignment revocation (mensfeld)
 - [Enhancement] Expose alternative way of managing consumer events via a separate queue (mensfeld) 
-- [Enhancement] Bump librdkafka to 2.3.0 (mensfeld)
+- [Enhancement] **Bump** librdkafka to 2.3.0 (mensfeld)
 - [Enhancement] Increase the `#lag` and `#query_watermark_offsets` default timeouts from 100ms to 1000ms. This will compensate for network glitches and remote clusters operations (mensfeld)
 - [Change] Use `SecureRandom.uuid` instead of `random` for test consumer groups (mensfeld)