fix: pin iceberg-rest-fixture to 1.10.1 to fix CreateTable test

The :latest tag was updated today (2026-04-09) and now rejects
CreateTable requests with "Malformed request: Bad Request".
Pin to the last known working version until the request format
is updated.

Author: MisterRaindrop

src/iceberg/test/resources/iceberg-rest-fixture/docker-compose.yml

@@ -17,7 +17,7 @@
 
 services:
   rest:
-    image: apache/iceberg-rest-fixture:latest
+    image: apache/iceberg-rest-fixture:1.10.1
     environment:
       - CATALOG_CATALOG__IMPL=org.apache.iceberg.jdbc.JdbcCatalog
       - CATALOG_URI=jdbc:sqlite:file:/tmp/iceberg_rest_mode=memory