Update duckdb index files

.gitattributes

@@ -78,3 +78,4 @@ translate_pl/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 transcribe_ro/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 translate_ro/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 transcribe_sk/train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+translate_sk/train/index.duckdb filter=lfs diff=lfs merge=lfs -text

translate_sk/train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:26156bc716816966565feb2e23cfb85e7faeba7534ba4157cd95c839efd50fb1
+size 277098496