Docs: Add Upsolver to vendor list (apache#10096)

site/docs/vendors.md

@@ -71,3 +71,7 @@ Starburst is a commercial offering for the [Trino query engine](https://trino.io
 ### [Tabular](https://tabular.io)
 
 [Tabular](https://tabular.io/product/) is a managed warehouse and automation platform. Tabular offers a central store for analytic data that can be used with any query engine or processing framework that supports Iceberg. Tabular warehouses add role-based access control and automatic optimization, clustering, and compaction to Iceberg tables.
+
+### [Upsolver](https://upsolver.com)
+
+[Upsolver](https://upsolver.com) is a streaming data ingestion and table management solution for Apache Iceberg. With Upsolver, users can easily ingest batch and streaming data from files, streams and databases (CDC) into [Iceberg tables](https://docs.upsolver.com/reference/sql-commands/iceberg-tables/upsolver-managed-tables). In addition, Upsolver connects to your existing REST and Hive catalogs, and [analyzes the health](https://docs.upsolver.com/how-to-guides/apache-iceberg/optimize-your-iceberg-tables) of your tables. Use Upsolver to continuously optimize tables by compacting small files, sorting and compressing, repartitioning, and cleaning up dangling files and expired manifests. Upsolver is available from the [Upsolver Cloud](https://www.upsolver.com/sqlake-signup-wp) or can be deployed in your AWS VPC.