Update duckdb index files

.gitattributes

@@ -13,3 +13,4 @@ cqadupstack-unix/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cqadupstack-webmasters/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cqadupstack-wordpress/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 dbpedia-entity/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
+fever/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

fever/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a3b4e4070d627b1d31cb8590d6c0d144f33782619c7da6ec81dd8a11c8eaf0ff
+size 1585152