Update duckdb index files

.gitattributes

@@ -154,3 +154,4 @@ default/it_vit_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/de_hdt_ud_train_b_2/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/zh_gsdsimp_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text
 default/fr_ftb_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text
+default/cy_ccg_ud_train/index.duckdb filter=lfs diff=lfs merge=lfs -text

default/cy_ccg_ud_train/index.duckdb

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:37d1a4c1b50e1b59af156037f640edec490c084b77d77a5345b6f64e2db46bf2
+size 3420160