Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ transcribe_cs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 translate_cs/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 transcribe_de/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 translate_de/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+transcribe_en/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

transcribe_en/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d2dd06d62f012f79de3ecfec16f46d7ba025a758b2d38b352e6df488c6e1840d
+size 272117760