changelog notes

Author: Parth

CHANGELOG.md

@@ -2,6 +2,9 @@ Tantivy 0.23 - Unreleased
 ================================
 Tantivy 0.23 will be backwards compatible with indices created with v0.22 and v0.21. The new minimum rust version will be 1.75.
 
+> [!WARNING]
+> Users of `sstable` may need to enable the `zstd-compression` to read blocks written by prior versions of `sstable`
+
 #### Bugfixes
 - fix potential endless loop in merge [#2457](https://github.com/quickwit-oss/tantivy/pull/2457)(@PSeitz)
 - fix bug that causes out-of-order sstable key. [#2445](https://github.com/quickwit-oss/tantivy/pull/2445)(@fulmicoton)
@@ -12,6 +15,7 @@ Tantivy 0.23 will be backwards compatible with indices created with v0.22 and v0
 
 #### Breaking API Changes
 - remove index sorting [#2434](https://github.com/quickwit-oss/tantivy/pull/2434)(@PSeitz)
+- make zstd optional in sstable [#2633](https://github.com/quickwit-oss/tantivy/pull/2633)(@parth)
 
 #### Features/Improvements
 - **Aggregation**