Update duckdb index files

.gitattributes

@@ -60,3 +60,4 @@ Hindi/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Hindi/test/index.duckdb filter=lfs diff=lfs merge=lfs -text
 Hindi/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 English/validation/index.duckdb filter=lfs diff=lfs merge=lfs -text
+English/test/index.duckdb filter=lfs diff=lfs merge=lfs -text

English/test/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0e24e10c5b869d712476324752aabe8d3f6aa06673285b4449b511d19ddeb190
+size 28061696