Update duckdb index files

.gitattributes

@@ -56,3 +56,4 @@ bg-ro/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 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-de/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:922ac1f25e0b41ab7415bd32712eb06516def053c1bc27861ce64638203ffa8a
+size 44838912