Update duckdb index files

.gitattributes

@@ -57,3 +57,4 @@ bg-sk/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg-sl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 bg-sv/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 cs-de/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+cs-da/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

cs-da/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:62658ad617e8eee41a29feb03ca58a54f55ee629f29c10c846bfa46d87463229
+size 43266048