chore: update lance to v0.29.1-beta.2 (#2442)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **Chores**
- Updated internal dependencies to use a newer version of the Lance
library.
- **New Features**
- Added support for a new query occurrence type labeled "MUST NOT" in
search filters.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

python/src/query.rs

@@ -201,6 +201,7 @@ fn occur_to_str(occur: Occur) -> &'static str {
     match occur {
         Occur::Must => "MUST",
         Occur::Should => "SHOULD",
+        Occur::MustNot => "MUST NOT",
     }
 }